I'm making the kids a shelter of T-posts with a tarp. What is the best way to attach the tarp? Will zip ties or rubber band around the top hold in heavy wind? Maybe nothing will. Anyway, I have a pallet big enough for both of them to sleep on. Should I put it in their sleeping area? They now sleep on the ground but I am thinking it would be cooler in summer with air circulation underneath; it can get quite hot here, 100* days and 80* nights. Also to keep them dryer, although they now sleep on the ground and seem to love it. The slats are 1x4's and the spaces are 3.5". Of course I worry about them getting their little toes caught!