ok here's my 2 pence!
i have always used closed cell mats and recently moved over to thermarest type mats.
i find the thermarest type far more comfortable!
i have only used a 3/4 length once, i did not find it comfy, i am around 5'11-6'00 and average build.
i'm surprised no one has mentioned using your rucksack as ground insulation for the foot end! i assumed everyone did it!
there are a couple of fors and againsts!
closed cell mat advantages :
cheap, very light, very warm, robust, reliable.
closed cell mat disadvantages :-( :
very bulky, not very comfy, can soak up water.
thermarest type advantages:
very comfy, warm, compact, adjustable air pressure(soft or hard).
thermarest type disadvantages: :-(
heavier than closed cell!, safer to carry it in your rucksack to stop thorns etc.
, HOLES!, you have to be more gentle with them, more carefull of where you use them, can be colder than closed cell.
one experience of mine is i have one that has a slow puncture, so it's lovely and cosy intill you sleep then it goes down, the cold hard floor wakes you up! so there you are blowing it up every hour or so!
for your own sanity take some form of repair kit! at least tank tape!
(i have tested mine in water ect and can't find a hole it must be the valve!
on my SPA training with my expensive thermarest type bed, i was desperate to by a £5 Millet's mat to see me through the cold nights!
i had to cover my sleeping area with spare clothing and my towel to stay warm!
i would say as a rule use a
closed cell mat for rough "stop and drop" type camping on rough ground.
and a
thermarest when you have time to check the floor or if you are using a tent or ground sheet!
safest option is to carry both a 3/4 thermarest and a 3/4 closed cell mat to act as foot insulation and thorn/stone protection!
:?: