The snap clamps look sharp! I was thinking about clamps and screw the clamps into the roof (once I can figure out where the studs are). Definitely will be doing something like that for the windows though. Also this fall we are debating about new windows on the house. They are ~30 years old now...this decision is leading to some procrastination about mounting...that aside, the taping in the first set of pictures, wow...yeah, that's a lot of tape. I do like how they stand up though. I will have to play around with some tape and see if that's a ton of work too...or something I can digest. Drilling out the pvc is an option, but i'll need to invest in a drill press if I go down that path. I did my arches by hand, but that was just 120nodes so it was tolerable.