Thanks for all the advice. I have bid on many items on ebay, and always followed up on the purchase. If I chose to bid on a boat, I would do that also unless there was gross misrepresentation (such as pictures of a different boat).
The boat I am referring to is this one:
2002 Catalina 270:eBay Motors (item 200403237250 end time Nov-14-09 04:04:12 PST)
The biggest red flag I can see is the seller's location is listed as Arlington, TX, while the picture shows a boat registered in NC. So my first question to the guy was where the boat is actually located and how/when I could arrange to have someone see it. It's been about 36 hours and no response. There could be a very simple explanation, but it's also possible the guy took some online photos of a "similar" boat and posted them to represent his boat. No chance I'll even consider bidding on this under these conditions. I don't see how anyone would - but it's got 33 bids.