We loved the toppers on the old trailer, so we had them installed on our Crusader 315RST. We originally didn't install them on our last trailer, and they collected all kids of stuff, water, critters, etc. I used a blower to clean off the slides, but if it is raining, that is rather difficult.
They make a BIG difference. Clean, dry, and cooler (keeps the sun off the top of the slide).
For Fred H. do you have any pictures of how you use the pool noodle to stop the flapping in the wind? I'm sure it also helps keep the water from building up on the topper.
Ben and Doreen
Home Away From Home - 2017 PT Crusader 315RST
TV - 2008 F250 Lariat 4X4 6.4 Diesel
42 nights camping in 2015
61 nights in 2016 (still not enough!)