I have used one of these to spear out of in two different ways. The first time I just cut the hole and put a decoy in. Overall it worked well but it was very bright in the house because of the light coming out of the ice that I was standing on. So I made a floor that was a little bit under 6’x6’ (whatever the inside footprint of your hub is) out of 1/2” plywood. Two 3’x6’ sheets with a piano hinge connecting the two. The underside of one half is a 2x4 frame with a 2’x3’ (or whatever size you like) spear hole on the outside center of the half. The other side is 2x4 and 2x2 frame with skis. I also put two eye bolts into the front of the ski side of the sled for a pull rope. Put all your gear on the folded sled, pull it to your chosen spearing location, cut your hole, unfold the sled/floor and throw the hub over and it ends up super dark, not as slippery as the ice, gets your boots off of the ice, and when folded fits in the bed of a pickup or the back of almost any SUV.