When i was looking for a boat I talked to an awful lot of people, many with an awful lot of experience of living on the waterways who knew shedloads about boats. Brokers, continuous cruisers, marina owners, surveyors, e bay sellers, one who had never not lived on a boat who answered the question "what are the questions I should be asking?" with astonishing succinctness and clarity. I eventually bought through a broker who seemed to know jack. In my opinion they would have been happy selling anything, motorhomes, package holidays or trips on a hot air balloon. They didn't know how to start the engine (it is rather old) wouldn't let me speak to the vendor (maybe the vendor wanted it that way), didnt let me see previous surveys (maybe they didn't know they were in existence) I remember a dangly brass lamp being pointed out as "worth at least a hundred quid" (yea that's great now tell me about the hull). They did do a very efficient job of organising the dry dock and handling the transfer of ownership and added an air of legitimacy to the sale. After all handing over tens of thousands to a bloke whose address is a couple o hundred yards down from lock 24 towpath side but I'm moving on Wednesday is a bit of a bottle job. Ultimately a broker had the boat I wanted but i did a lot of checking up myself and wasn't overawed by their expertise, and was prepared to walk away from my deposit if things got smelly coz I didn't think that they'd be much help.