My Pop Up has developed a crack in the roof.....it is a Fiberglas type material. I drilled a hole at the end of the crack, sealed with RTV, and it seems to be okay (all of last year)....the crack grew over the winter, and a buddy recommends 100 mph Tape.....I'm thinking of either more RTV, or a combo of RTV and Eternabond.....not sure of the 100 mph tape....anybody ever use that stuff.....I know Eternabond is highly recommended for this