I have an eastman Ice-cube, I use a Mr Heater portable, if I'm not using disposable 1lb'ers I keep my 20 lb'er outside the hut and run the line under the bottom of the hut. I put the heater on a small piece of plywood. Very toasty, room for two holes, chair, milk crate table, Marcum VX 1 Pro flasher.... well you got it. This week CT has Sub Zero pop ups on sale, the same thing as the Ice-Cube. I'm going to get at least another year out of this old pop up, it is 5 years old now. One fiberglass rod inside split when I opened it up this year but I just wrapped camo duct tape around it, good as gold.