Here are my/our boat buyen Deal Killers (not necessarily in order of highest importance - but - they all are important to us!)...
A long list, Art, but good to know what you really couldn't accept. I think the difficult thing sometimes is separating preferences from deal killers in our own minds and then making it clear to a broker, if using one, is even harder. It's do not under any conditions show me a boat with these things versus these are my preferences but I'm not ruling out completely.
The other things is separating those that can't be changed on a boat from those that can be.