I like your idea. We have 22K+ on our 2902WS. Have had no rock, chip, tar, etc. problems.
Only issue with the front window has been a water leak. Caught it soon enough to avoid any damage. A little Pro Flex Crystal Clear RV Flexible Sealant fixed that.
Thanks for your post!
Craig & Cath
2018 2902WS Rockwood Ultra Lite
2017 Ford F250 Lariat, 6.2 gas
Equalizer Hitch w/ 4-Point Sway Control
Days camped since 2016(retirement): 870