I am planning on taking a long trip in Aug, and I plan on just going ahead and putting the seat cover on before I leave and leaving it on the whole trip so I won't have to mess around doing it on the road if/when I run into rain. I have the cover that has the space for a rider's backrest. My question is, how well does it stay in place while riding? I don't want to have to be re-installing it every time I stop for gas. I never could figure out why they didn't just use a type of material inside the seat that can get wet so we don't have to use a cover. That's my only complaint about the RDL...