Realspawn, you never cease to amaze me! I havent downloaded yet, but i sure will try it! My wife already said she likes the water and wants to take a dip (yeah she really said it). You may want to check out these games for inspiration:
-HYDRO THUNDER (by Midway available for SEGA Dreamcast)
-Jet Boat Superchamps 2 (can be downloaded
here)
-KAYAK EXTREME (can also be downloaded
here)
they are not exacly the same genre, but their physics are great!!!
Keep it up realspawn!!!!!!!!!