i never understood why anyone would want a tarp in a kit that was large enought--pack size--when a small tent could be used..a tent has four walls and a floor and will keep out the rain and bugs while a tarp is open all around..i camped under a tarp on several two week canoe trips and found that a small cheap tent was much better..putting up a tarp is a lot of work while a tent is a few poles and stakes..you can use a tent as a "core" and pile brush around it if you need to keep off heavy weather..a tarp is a throwback to the days when you put one over an open fire..no small camp stoves..a tarp is a back-up item if your stuck for real shelter--so take a real shelter in the first place..
the cheap plastic tarps found in the big box stores make alot of noise in the wind--enought to keep you awake..they will stand up to sub zero temps..i have covered canoes and wood piles in Minnesota winters but don't expect anymore than a couple years out of them..if i were to get a tarp i would go for the lightweight canvas ones i recall from Scouts..wind and waterproof and heavy enought not to flap in a light wind and not burn thru with small sparks..