So I've finished one tarp and it's fine but too small so now I'm looking at making another that's big enough for my and my tarp I was think that 5 yards of Sil-nylon from Ripstopbytheyard would be enough for me to make a decent Cat-cut. For those of you reading this that have made one can you tell me do you think that'd be enough? Also what kind of hem do you use I usually just do a rolled hem on most things.