A fly over the top of the tent solves the problemI had a 12x12 canvas - NEVER AGAIN! Slept four with gear, tight but doable till we had snow fall on us. Three night trip ended up being 4 just to get the tent down. Canvas froze up solid! once wet and freezing, it is a nightmare, and if you heat a canvas tent in cold weather, the heat will condensate on canvas, freeze, same effect. We had to literally smack the sides of the tent with 4" tree branches to try and fold it up to leave. Also, weighted a ton!