I am sure there are non used car salesmen type boat brokers, unfortunatly, I
have yet to meet one


with that kind of attitude, you never will.

All good salespeople are taught very early on in their careers to "qualify the
prospect" (meaning, 1.) does he have the money, 2.) does he have the authority
to make a purchase decision, and 3.) will he buy from that particular
salesperson), and should he past that test, 4.) is he worth selling to?.

Your bad attitude disqualifies you on #4 above, which means the good
salespeople won't deal with you (you are far more effort to sell to, far more
effort to keep after the sale, and do far too much bitching afterwards to be
worth the commission), so only the most poor of used car type salespeople will
deal with you. Meaning you get screwed a lot, and pay extra for poorer quality

Which is what you want to happen.

Because you like it, enjoy.