Hi Bonnie & Rich. We have attended dog shows in Oconomowac.
This thread has a bunch of info / details regarding the Velcro.
Using velcro to attach popup gizmos.
I used a step stool to climb up on the bunk end prior to raising the canvas. We just fold the bunk end back up with the PUG attached and the Reflectix in the window pockets. I think Jim & Chris have been detaching the PUG's, and I think he has a picture of one of the mechanical hands used to re-attach the Velcro.
Bit perplexed with your PUG not covering the whole bunk end. The manufacturer fits them by model. Take a look at the pictures of my High Wind PUG's on the third page of the thread to compare fit to yours. I think Jim & Chris' installation fits a bit 'shorter' than ours as he attached the sewn Velcro to the green or underside of the PUG and folded it over to attach to the trailer, whereas we sewed the Velcro to the silver side and no fold. Anyway, in either case the PUG comfortably covers the whole bunk end roof.
Note the front bunk is typically a different size because of the slope in the trailer front wall, and the front PUG will not fit the other bunk(s) correctly. Were your PUG's ordered for this unit?
Another thing I did to make it easy to fit the PUG's. I removed the supplied plastic hooks from the shock cords. I attached a light carabiner to the sets of cords on each side
with a bowline knot; makes it easier to reach under the bunk end and attach the two sets of shock cords together, and the weight of the carabiner keeps the shock cords accessible when under the bunk end. As mentioned in the other thread, the top shock cord is not required with the Velcro attachment, and will actually tend to pull the PUG end off the Velcro; I left the cord in place but did not attach it to the carabiner.
Edit: I just noticed Jim & Chris also used two carabiners per bunk (see the pictures on the first page); here I thought I had a great idea but my powers of observation were just a bit weak!