I think you may be expecting too much from a buyer's broker. At the end of the day, the brokers make their money when a sale closes. There are scum brokers and there are quality ones. With the access to info on the web and web based listings, you can do most of the leg work yourself without a broker involved. When you find something of interest, call the broker and get a showing. You'll learn from each boat you look at and each broker you deal with. To protect your side of the deal, find a good surveyor and discuss with them before you start looking. A surveyor suggested by the broker in the deal is not generally the best choice for your interests.