Rubber + UV = deterioration. Just look at what happens to tires that sit out in the sun all day. They dry up and crack. Same thing will happen to the rubber in the roof when the coating is removed. This is why it is important to clean and apply UV protectant to the roof, so that it lasts.
Looks like Hengs will do the job. Going to order me 3 and give it a try.
I originally had planned to sell it and upgrade to a slider BH, but decided to keep it and make a couple changes to make it more comfortable. Since I am keeping it a few more years, I want it to be in TOP condition, and stay that way until I do decide to sell so I can get top dollar. Keeping the roof looking new is the most important.