*I wonder what people call a "good" survey?.....* Every one I have ever had or heard about missed major things and concentrated on little things that insurance companies love to think are important while the rest of the boat is a disaster.
*I've had a couple of good surveys. One called for a remote propane valve, cleaning the bilge, replacing some hoses and something else very minor. He was able to do some testing, percussive and moisture, that I couldn't do. I already knew most every little item he found to need work and I had the boat for another 15 years without major problems.
For me, a good survey is one that finds problems, in particular finds all those that you already know about,*and gives a seasoned second opinion on the boat. If I had problems with the boat 2 years after the survey then I probably wouldn't feel as good about it.