Tent, Tarp or Hammock: Choosing a Shelter System

Almost every shelter comparison you will read compares the wrong things. It puts a tarp weight next to a tent weight, declares the tarp lighter, and stops. That is not a comparison, because a shelter is a system, not an item. A tarp with nothing else is a sheet of fabric. A hammock with nothing else is a place to sit. What you actually carry is a set of parts that together keep you off the ground, out of the weather, away from insects and warm enough to sleep, and the only honest comparison is between complete sets of those parts.

What counts as a shelter system?

A shelter system is everything you carry that exists to make sleeping outdoors survivable and tolerable: the fabric over your head, whatever holds it up, whatever holds it down, whatever keeps the ground water and the insects out, and in the case of a hammock, whatever keeps your underside warm.

Spelled out, the three systems are:

A tent system is the tent body, the fly, the poles or the trekking poles that stand in for them, the stakes, the guylines and often a footprint. Most manufacturer numbers cover the first four and quietly skip the rest, which is where the missing three or four ounces live.

A tarp system is the tarp, the stakes, the guyline, a groundsheet, and then almost always either a bivy or a separate bug net with a bathtub floor. A tarp on its own has no floor and no bug protection, so those parts are not optional extras, they are the rest of the system.

A hammock system is the hammock body, the suspension straps and hardware, a tarp, stakes and guylines for that tarp, a bug net if the hammock does not have one built in, and under-insulation in the form of a pad or an underquilt. That last part is the one everybody forgets when they say a hammock weighs 12 ounces.

What does each complete system weigh?

The table below gives typical system weights and typical prices as ranges rather than single figures, because a single number here would be false precision. A silpoly tarp and a Dyneema tarp do the same job at very different weights and very different prices, and both are legitimate. Use the ranges to see which systems overlap, because the overlaps are where the real decisions are.

Two things fall out of that table immediately. The first is that the gap between the lightest workable system and a genuinely comfortable enclosed shelter is about 15 ounces, which is less than most people expect and much less than the price gap suggests. The second is that a warm hammock system is heavier than every tent on the list except a full freestanding one. Hammocks are chosen for comfort and for terrain, not for weight, and anybody telling you otherwise is leaving out the underquilt. Per shelter figures for specific models sit in the tent weight comparison chart.

Where does each system genuinely work?

Environment decides this more than preference does. A system that is excellent in one place is unusable a state away.

The last row is the one that catches people out. A staked trekking pole shelter cannot be pitched on a wooden tent platform or a compacted gravel pad without rigging around it, and sections of several popular long trails have exactly that. If your trip includes them, a semi-freestanding tent like the NEMO Hornet OSMO 2P solves a problem no amount of technique solves. The pole tent versus freestanding comparison works through that case in detail.

How does each system handle condensation?

Condensation is not a defect, it is physics. A sleeping person releases a large amount of water vapour overnight, and that vapour condenses wherever it meets a surface below the dew point. Every shelter deals with it differently.

A tarp is the best of the three, because it is barely enclosed. Air moves freely under it, so vapour leaves rather than collecting. The cost of that ventilation is everything else a tarp does not do.

A single wall shelter is the worst, because the fabric over your head is the only fabric, and that is where the condensation forms. Brush against it in the night and it rains on your quilt. Single wall shelters can be managed with aggressive venting, a high pitch on humid nights, and site selection that avoids the low damp spots, but they always need managing.

A double wall shelter moves the condensation out to the fly, where an inner layer of mesh keeps it off you. That is the practical reason double wall shelters keep selling despite weighing more, and it is why the extra fabric on something like the Big Agnes Copper Spur HV UL2 buys real comfort on a rainy multi-day rather than just space.

A hammock is a special case. You have excellent airflow, which almost eliminates condensation on you, and that same airflow is exactly what strips heat from your underside. The hammock's best feature and its worst are the same feature.

How do they compare in a storm?

Storm performance comes down to three things: how much of the wind the shape sheds, how many anchor points hold it down, and whether there is a floor keeping ground water out.

A double wall tent with a full pole set is the strongest, because the pole geometry holds shape from any wind direction and the guy points spread the load. A trekking pole shelter can be very strong when it is pitched well and taut, and it is noticeably weaker when it is pitched loose, which is the argument for practising in the yard rather than in a storm at dusk. A shelter like the Durston X-Mid 2 Pro uses an offset geometry that gets a usable shape from two poles, which is a good demonstration that pitch design matters more than fabric weight.

A tarp pitched low and tight, in a sheltered spot, with good stakes, rides out surprisingly bad weather. A tarp pitched high, in the open, with the stakes that came in the bag, does not. That spread is the entire learning curve of tarp camping. Stakes are the cheapest place to improve storm performance in any staked system, and a set of MSR Mini Groundhog stakes holds in soil that spits out the round pins packed with most shelters.

A hammock handles rain very well under a good tarp and handles wind poorly, because it swings and because it presents your entire underside to moving air. In sustained wind a hammock camper usually ends up on the ground.

What about bugs, and what about Leave No Trace?

Bug protection is binary. Either your system encloses you in netting or it does not, and in a bad insect season the difference is a night of sleep against no sleep at all. A tent and a netted hammock have it built in. A tarp needs either a bivy with a netted hood or a separate netted inner, which is 5 to 11 ounces and, notably, closes most of the weight gap between a tarp system and a real shelter. Decide the bug question before you buy the tarp, not after.

Site impact runs the other way. A hammock is the gentlest system available when it is used with wide tree straps, because nothing is compacting the ground and no vegetation is being flattened. Narrow cord or rope damages bark, so tree straps are not optional. Tarps and floorless shelters let you use small sites and often need less flat ground than a tent. Tents have the largest footprint and the strongest incentive to use established, durable sites rather than making a new one, which is what the guidance asks for anyway. Whichever system you use, camp on durable surfaces, respect posted setback distances from water, and check whether the land manager restricts where and how you can camp before you plan a stealth site.

How steep is the learning curve for each one?

A freestanding tent has essentially none. It goes up the same way every time, on any ground, in any light, and it stands up before you stake it. That is worth a real amount of weight to a beginner and it is why something like the Naturehike Cloud Up Base 2 is a reasonable first shelter even though it is heavy by the standards of this site.

A trekking pole shelter is a few trips of practice. You are learning to read the ground, set stake angles, get the tension symmetrical and adjust pole height for the conditions. It is not hard, it is just not free, and the failure mode is a saggy pitch that flaps all night and collects condensation.

A tarp is a genuine skill. Multiple pitch configurations for different weather, site selection that actually matters, ridge line tension, and the judgment to pitch low when the sky looks wrong. People who love tarps love them for that. People who buy one to save 8 ounces usually sell it.

A hammock has a short, sharp curve: hang angle around 30 degrees, sleeping diagonally rather than along the axis, ridge line length, and above all under-insulation. Most people who try a hammock once and hate it made two mistakes, hanging it too tight and skipping the underquilt.

Do trekking poles change the maths?

Completely, and only if you were already carrying them. The saving in a trekking pole shelter comes from deleting the tent poles, which is roughly 12 to 20 ounces on a comparable tent. If you hike with poles anyway, that saving is free. If you do not, you are now carrying poles you do not use while walking, and the system weight is no better than a semi-freestanding tent.

If you are buying poles specifically because your shelter needs them, buy adjustable ones. A value carbon pair like the Cascade Mountain Tech carbon poles covers it, and an aluminium pair such as the LEKI Legacy Lite bends rather than snapping under a sideways load, which matters when the pole is also your roof. Fixed length folding poles like the Black Diamond Distance Carbon Z are excellent to walk with and a poor match for a shelter that wants a specific pitch height, because they cannot be adjusted to it. The trekking pole roundup covers the trade offs.

Which fabric should the decision rest on?

Less than you would think. Fabric choice moves shelter weight by several ounces and shelter price by several hundred dollars, and it moves how the shelter behaves in specific ways: Dyneema composite does not stretch when wet and does not absorb water, silpoly stretches far less than silnylon, and silnylon sags in rain and needs re-tensioning at midnight. Higher denier fabrics are tougher and heavier. None of that changes which system you should choose, only which version of that system you buy. Work out the system first, then read the fabric denier and weight reference to decide how much you want to pay per ounce saved.

So which one should you buy?

If you hike in mixed terrain and want one shelter that works everywhere, buy a semi-freestanding or double wall trekking pole shelter and stop thinking about it. That covers alpine, desert, platforms and woodland, at 29 to 52 ounces, with a learning curve measured in trips rather than seasons. The ultralight tent roundup is the shortlist.

If you hike almost entirely in forest with reliable trees, and you have never slept well on the ground, a hammock with an underquilt is worth the extra ounces because the thing you are buying is sleep. If you are already comfortable outdoors, count ounces seriously, and enjoy the craft, a tarp system rewards that. And if you are new, buy the tent, use it for a season, and let the trips tell you which of the other two you actually want.

Whichever you choose, weigh the whole system rather than the item, because shelter is one of the three heaviest things in the pack. The Big Three guide explains why those three items are worth solving first and in what order.