Thanks to all who posted helpful responses.
UPDATE:
Did a sea trial with my friend last night - real nice boat - he agreed to buy it - owner is throwing in its a triple-axle trailer. From its second owner who has had it for 15 years. That guy has worked at that marina fora long time, is a Corvette collector, already bought a newer go-fast boat (that one isn't one), worked with my son there, turns out my son has done winterizing and summerizing on it.. That guy has helped me with my boat - a top notch guy. It's still almost as clean as in those old pictures, the engine room is amazingly clean and orderly, everything works except windshield wiper (which he's looking at today), is solid on the water through chop, etc, etc. I told my friend if he doesn't buy it, I will. I knew my friend would but it, good thing, I don't have the $. Can't wait to go on boating trips together!