Thanks for the detailed post, wheelerd! I did a lot of searching through old threads on the forum, and especially after you explained it, it does seem like quite a bit of work. I emailed a few guys that do boat upholstery that people on TT recommended, and so far copycat upholstery has responded. Depending on how much it costs, we may just go with the process of sending the old skins out and then put the new stuff on ourselves. We just need the three seats recovered, so I'm hoping it won't cost too much an arm and a leg...
Copycat sent a quick and very informative reply to my request for a quote. They just need to see a few pictures of each piece, as well as dimensions, then they can give a definite quote. I'll do that this weekend since I don't get home til after dark during the week.