HFarr,
I'm with you. I know boats work harder than a standard truck which the 6.2 was meant for. I looked this up once to make myself feel better but the logic made since to me.

Assuming the average speed for most people is 45mph (city/highway mix) over lifetime of driving. 500hrs x 45mph = 22,500 miles. Call the boat a heavy duty load and double the mileage this is 45,000 mile equivalent. Triple it 67,500 miles. Both of these are well under the life expectancy of the raptor engine.

So with you on the engine being solid. The hull and trailer would be my only concerns for warranty. The stereo, ballast system, etc. could all be upgraded for $1500 or less.