Re: Big decision on boat purchase
800 hours on a 2000 boat wouldn't scare me one bit. Do a compression test on it and then you'll know the health. Dirty truth is that many boat owners pull the plugs on their hour meters after a certain point in an effort to keep the value up...so no guarantees there anyway.
Just as a point of reference, my 2003 Chevrolet Silverado came from the factory with an hour meter built into the digital odometer. Right now the odometer says 58,000 miles and the hour meter says just under 1,200 hours. So if you were to use that as a reference, your 800 hour boat is kinda like buying a 2000 model car with under 40,000 miles...
Granted, on a boat they are definitely much HARDER miles.
So based on the description you provided, I'd have to compare that 800 hour boat to buying a year 2000 truck with ONLY 40,000 miles, that has been used to tow nothing but 8,000 pound trailers for it's entire 10 year life, but with an oil and tranny fluid change completed every 2,500 miles. Maybe that will help you give that hour meter some perspective.
If it was maintained, that 800 hour boat is FAR from worn out. It's just broken in...
I/O will work well for wakeboarding. Direct drive (or V-drive...but probably out of your price range) will work better.