I didn't want to have full doors on my tarp given the extra weight and the fact that I don't winter camp. Some of my main concerns out in the mountains are high winds and driving rain. Put these on my WL Big Daddy this winter and they are sewn to the side with velcro closures. There are two sets of reefing ties on each side so that I can roll them and tie them off out of the way.
Since it was warmer than usual last night plus some wind and rain, I tried it out.
So far, so good.
The view from inside:
The planter box kind of precludes getting the tarp set exactly square.