Conway is about 10 minutes from me. Here we have the Intercoastal waterway, waccamaw river, and the ocean. As far as boats, I have been seeing a few more lately. There is not a real large group in this immediate area but the numbers are growing. Tons and tons of CC fishing boats and such. There is a fountain dealer in Little River but not too many other performance dealers in town. The #'s of new high-end homes are exploding along the waterway here though and more high end boats will be coming too.
Washington, NC is probably one of the quietest towns you'll ever see, save the boat testing at the factory. Theres nothing there besides fountain. My parents are moving to that area, (morehead city) which is down on the coast. I have spent a lot of time there, quiet area but very very nice and lots of water.
The weather here is definately much much better than MI for boating though.
If you have any questions about it down here, don't be afraid to ask. Anderson is about 4.5 hours from the coast.