Travel Trailer Entry Door (and other repairs)

Has anyone ever built a new entry door for a travel trailer? Mine got caught by the wind today (I thought it was shut tight, but evidently it hadn't latched), and is pretty busted up. And while I'm at it, some of the drawers in the old travel trailer need new hardware -- the glides or whatever you call the piece that goes under the drawer. I think next time I go to town, I'll stop in at an RV place that does repairs as well as sales, but it would probably be less expensive to just build a new door out of plywood, if that would work.

Kathleen