Time to pile on...
I sold my boat this spring. Broker insisted it have a survey or they wouldn't list it. So I went with their recomended surveyor. I was amazed by the things he missed. Wasn't my problem, the broker loved that they had a 'good' survey. I graciously pointed out the missed deficiencies to the buyer, I wasn't going to hide known defects.
Then came time for the engine survey. The broker recommended guy did not climb down into the engine space, didn't use a laser temp guage, didn't even check the oil! Went for a boat ride and took their money!