The beds on our old trucks often were abused and ignored. I started my bodywork on the bed thinking the straight sections would be the easiest to deal with. In my experience they were the hardest. It was pretty easy to get my bedsides into acceptable shape for a restored work truck but I wanted a higher level of finish than that. The link should show a few pictures that demonstrate the process I went thru before deciding on a Mar K bed and the results I got with their products.
http://s99.photobucket.com/albums/l286/Hookalatch/Bed%20pictures/?start=all

Chuck