Mad Mariner™ has done a poll and article on how much fuel prices have changed people's boating plans. A bunch.

Check the article for details and some links to a variety of builders who are beginning to build more economical boats.

A trial subscription to the site is available which gives you full access to try it out, or you can purchase a yearly subscription for a modest fee.

For full disclosure, I write some paid articles for Mad Mariner™.