Stopping spin drift is hard but not impossible I have heard that the jacks are working on a "tarp tent" but what i saw of it i dont think the roof is in anyway desinged to handle snow load or ice. I do hope that the jacks and speer take this advice and make true "winter" tarps because i cant sew worth two cense
. Also the normal guy lines are fine till you have gloves on so maybe some sort of tesioner added to the tarp to give it more "winter" tarp credentials. Also tieouts from each end using two seperate lines give you a sagging roof under a tight pitch with such large tarps and with weight on them. Using a continous ridge line under the tarp with a strong enough cord under good tension will eliminate this which should be integrated into these tarps. A little idea of my own how about little pockets under the tarp behind each tieout to stow the cordage in cause who really wants to shank the cordage thats covered in ice?