Any backstory on why they are selling it? Personally, I'd open every hatch, flip every switch, inspect the wiring, pull the engine cover, check the anodes, eyeball the hull from stem to stern, inspect tires/hubs on trailer, check the gauges on the motor, get maintenance records, and run the crap out of it. I'm with Lucky John on this, unless it's your first boat and you don't know what to look for, I'd skip the survey. Unless you have a reason to suspect water intrusion or a motor issue, but leaks seem unlikely with a nearly new boat, and I doubt a surveyor would pick up an engine making oil in a 30min trial.
That being said, I was quoted just under $600 for a survey/sea trial when I bought my 2320, so if that $600 gives you peace of mind on a $100k purchase, by all means, do it. I chose to put my $600 towards new tires and a 100 hour service
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I guess this was yesterday...hope it went well!
PS: is the engine under warranty still?