I went out on the Sea Raycers three times last trip and never got wet. One of the three times, I was out with my mother (I was driving) and deliberately tried to ride other boat's waves which caused us to get sprayed a bit. My mother wasn't happy with me - kept yelling at me to stop it.
But, other than being sprayed a couple of times (see above), I stayed completely dry. The other two times out in the Sea Raycers I was solo - so, not having the boat severely weighted down may have helped to keep me dry. Oh, and rent from the Poly - they're reported to be the fastest boats. I rented from the Poly twice and the Yacht Club once. Trust me -
huge difference in speed between the Poly boats and the Yacht Club boats.
Oh, and Endeavour are you a professional? I may need to talk to you about delusions.

I expected to stay dry and did!