5th wheelers size and frequent relocation/campsite fit size?

We are traveling full timers. We rarely stay more then two weeks in one place. We stay in as many state, fed or county parks as we can find. Went through about 28 states this past summer. Never had problems finding a place. My fiver is listed at 38'11". However cap to cap is 40'6" according to DRV. I also carry two bikes on the back so add at least three more feet. This winter all state parks in Fla. moving every one to two weeks. Yes there are places you won't fit but there are many places you will.