When in storage I put a couple of lengths of plastic 4 inch plastic gutter I purchased at Home Depot. It is flexible and goes over the awning roll nicely. I store mine outside so I had to experiment as the wind would blow them off. I finally used some velcro on the top of the awning roll matching to the inside of the plastic gutter. That seems to be working. I would not go down the road with like that but for storage I think it does as I wanted. So much so I think when the weather gets warmer I will do my topper as well. Comes in 10 foot lengths for about $10.00.
2013 Ford F-350 SD Diesel, 4X4, Crew Cab, Lariat
Sabre 2014 32RCTS, Pullrite Superglide 2900 18K