You only get wet when you stop or go slow. I drove a 68 Bronco around quite a bit when I was younger in the Pacific Northwet, most of the time it was topless. Freeway speeds were no problem staying dry. I would go by an awning/sail maker and see if they could make you some type of cover to go over the tube doors. You could make it so it could be easily removed for trail use and re-installed for freeway driving.