its an easy installation. contact PP if you have any questions about the location of the paddle wheel, it's the most important. I installed mine directly opposite my water intake on a 1980 Ski Nautique as far away from the center of the boat as i could. drill a pilot hole with about a 1/8" bit from the inside of your boat out, this will make using the 2" hole saw from the outside in easy. I find if I hole saw from the outside to the inside, there is less flaking of the fibre glass when the saw cuts thru. Make certain you have enough internal clearances to install the paddle wheel. Take a small piece of emmery cloth or sand paper and remove the sharp edges on the 2" hole, finish them with about 1/16 radius, this will help reduce stress risers in the fiberglass and gelcoat and reduce any spider cracks in the years to come.
It will take a bit of time to get up enough nerve to drill the first hole, remember to drill you pilot hole from the inside of the hull out, after that, you're committed and the rest is easy. I would never wakeboard without PP.
I'll tow my boat for 4 hours just to have PP rather than ride behind my brothers boat without it!!