Condensation on Hub Ice Shack Windows

Anybody have a fix for condensation? 

Keep the zipper open a bit more after you position the door away from the wind  ? 

I knew a guy that built a shack with an entire clear corrigated fiberglass roof for light . When it warmed up it was almost like a rainstorm. 

Laws of physics,  no fix. As long as the windows are cold, and the air inside the shack is moist you will have condensation.