They are known for having stringer/transom issues . Tapping with a plastic tip hammer , noting any sound differences ,then pushing in that area if the transom . Any screws that can be removed then probed with a small pick for dry shavings ,transducers , bilge pumps usually get screwed in . Any signs of stress in the gel coat . Next step other than moisture meter is a surveyor, probably 5-700 and might be worth it . They do not check the engine out as in compression, oil samples etc . They do look at hoses , clamps , through hulls , bonding , pumps, blowers ,wiring , controllers, gauges . Then you have wiring, bonding , check valves among a bunch of other things . So if your comfortable with your knowledge in those areas, he is not needed .Otherwise it's worth it . If you're serious about boat but might be questioning its integrity you can aways negotiate a price based on it passing a survey if a appointment is a week out or something like that.