Your Trailer/RV's floor, walls, and roof are completely full of holes. IMHO, there is no reason to shy away from adding a couple more. Just take your time to do it right or hire it out to a pro. You will likley end up with a job done better than the ones done at the factory.
'04 GMC Sierra 2500HD, CCSB, D/A, MaxBrake, B&W Companion, Retrax Pro, AR Power Steps
2013 Rockwood 8289WS w/Diamond pkg
1969 Camaro RS/SS Convertible
Dad's old 1968 Empi Imp (recently recovered from under 21 years worth of boxes/dust)