Good fix. I will try the same. I bought some Cabelas space blankets to cover the bunk ends on my rockwood 1940 pup and they fit great (one side completely, the larger bunk about 5/6) and help keep debris, tree sap, etc., off the roof canvas. Keeping that AC constant drip off should also help extend the life of the canvas.
2012 Rockwood 1940ltd
2004 GMC Sierra 4x4