There is a great boat buying part of "boat owners mechanical and electrical manual" by Calder. It is a very complete list and you will spend days looking at the boat. Dont believe a thing brokers say. Use your eyes and a digital camera and tell them to keep quiet. I once had a broker tell me I could only run the engine at a dock, stopped looking right then at that boat. Also dont believe what manufactures say about there boats, tank size, etc. Lot of lies there too. Good luck!