Blowsion one way valve is the best thing i put in my ski to get rid of the water highly recommed them.
Found this on the PWCtoday forum "One thing you can do with your hood is open up the rear air inlets. I made mine triangular instead of oval, then closed off 2 of the inlets in the front. Be careful not to close off too much because you'll starve the engine of air which will richen it up and cause it to bog. Also, I cracked the liner on my stock hood from doing deep subs. When you go under, the engine is pulling a vacuum on the hood which sucks in air/water. The black plastic liner kept popping inward and finally cracked on the crease. Just a heads up. "