Given a water line of 20.5 feet and using 1.34 X square root of 20.5 gives a potential hull speed of 6.06 knots, that is equal to 6.97 MPH so it would take 14.33 and that assumes no wave action, and a straight line and no currents. Chances of being able to do full hull speed is unlikely. Sitting there with the motor going full bore for 20 hours does not seem like much of an adrenaline rush to me, more annoying.
I have looked at several charity boats (at least 8), and most are not in good enough shape to take a 300 mile coastal cruse without at least a few repairs. Normally if it is going to a charity auction it is because it either needs some repairs, or they cannot sell it in the current shape.
OK Paul, (a Miata? Really? Ok, I digress..)
So I'm right with my math...
No one said he was buying a "charity" boat. He said he was buying a boat donated to a charity. Believe me, many people donate perfectly good, sound boats to charities for auction to, you know, support the charity?? But, I guess, you've researched them all and know they are all POS's right?
The link I posted above with boats for sale have all been donated. Dr. Laura donates about one a year to support the OCC Sailing Center which is then sold off (after two years for some tax reason I guess) as a donated boat to help support a sailing center. I guarantee you, her's , nor any of the others are in poor shape.
Maybe, you're looking into the wrong charities? Like the ones advertised on the radio, "Donate your boat to Cars R Us and get a great tax deduction" IDK.
At this point. Really. Who cares?