I was concerned about our Florida sun deteriorating my awning but didn’t want pay $100 plus for a snap on cover. My TT sits uncovered when home.
Made one out of two 10ft sections of light weight sewer pipe cut to 7 ft each. Added a flap to cover the first couple of inches where the awning connects to the trailer. (This seems to be an unprotected area with the ones readily available).
This is a rather simple project. If you have access to a table saw it might take an hour to complete. Maybe twice that with a jig saw but still doable.
The sewer pipe was more flexible than I thought it would be and snaps over the awning nicely. Used 4 inch pipe and 2 layers of heavy aluminum ac duct tape for the flap hinge. Clean the pipe with alcohol first and rub the tape good with a squeegee ( friction heat helps bond the tape glue).
I don’t intend on using it while traveling but with a couple of Velcro straps on either end I don’t see an issue for those wondering.