We use the Coleman "Black Cat" catalytic heater in hub blinds and double ladder stands that are skirted. Works very well even in colder Wisconsin temps.with the "low" 1500 BTU setting we very seldom use the "high"3000 BTU setting. On Low a 1lb propane tank lasts about 10 hours. With the two plastic legs and the tank as the third leg the heater is very stable.