Interesting questions about buying used. Will most folks let you get it to the dealer, and have it checked out at your expense if you can make a deal? Secondly, will a good dealership really check everything over? I can run a basic compression test myself. I would want someone that knew the common failure modes and how to find them ahead of time. I'm not looking for anything beyond 18' for storage concerns. I've never owned a big purpose-built aluminum, so I'm a bit in the dark about them other than what people say about them blowing around in the wind more than glass. My main concern with glass would be transom failure in hulls that are out of warranty.