[rhagfo]

Originally Posted by chuckster57

I use a small crowbar. Get between the frame and coroplast. Put the notch where the “nail” is and use the washer as a pry point. Save the washer and use self taping screws in the same hole.

Interesting does it take much force to pop them out??

Ours had an open belly when we bought it, but I inclosed it with coroplast and the Mylar foil bubble insulation, I used self drilling hex headed screws with fender washers.