I own a 24' inboard powered cabin cruiser. I was wondering if there is a good place to get trailer plans to build a good trailer for this boat. It stays in the slip year round and considering I work on my own stuff rather than paying some over-priced marina to do the simple minded tasks. (They want to charge me $230 bucks just to pull her out and clean the bottom! Gimmie a break.) I would rather spend my money building my way out of slip hell. Any suggestions?