Dear Jim, 1. A good used unit would be good. Keystone, Damon, Forest Rivers 3. NuWa, Skyline 4. I find the pros and cons to be equal 5. The best prevention is keep the roof clean and maintained.
Elbow grease is the best cleaner.
Where can I get advice on how to back a fifth wheel into a non pull through. Dear Dean, No, experience is not the only teacher. It covers turning, backing up, hitching up, pulling into camp sites, pulling onto highways, hooking up at campsites and lots of other tips and tidbits. All I need when you call is a credit card number and ship to address. I ship the orders same day or next day.