Can someone remind me what the "ideal" spacing between trees are to hang a JRB BMBH? I cant find my directions that came with the hammock but I think I read something like 15'. I'm looking to buy a tarp to go with my BMBH and am thinking its useless to get a 12' tarp if the ideal tree spacing is 12'. I'm thinking half the distance between the end of the hammock and the tree is where I want my tarp to cover. Anyway I am hoping this will help me narrow down some tarps. Currently looking at a few options from OES 10x10, 10x12, 15x12. The JRB 11x10 and the Speers winter tarp.