Yes and it works with Cascade. You just have to put brakes underwater so it actually slows down, but so far it's the best solution.
wasnt there a splash effect if any coaster car touches a water surface? They should just enable this or flesh it out so we can build realistic drops. I agree on the friction. Its the only reason i never use waterrides.
Any object that hits the water makes that sound.
Even peeps flying through the air and falling into the water it makes that sound. [up]