>>2521402yeah, i definitely needed about an extra two feet on each side to properly tighten the tarp. might have been achievable using a daisychain strap instead of the tree straps that I had, only one loop at each end. as far as ataching the main line to the straps, this is what i'm using. screenshot from a YT vid,
https://www.youtube.com/watch?v=buf_iWKI8ioIt actually worked pretty well as far as tightening and release. I went with this because I've seen where some people cut permanently attached a carabiner to the main line and cut off the excess. I'd rather not cut anything off though.
