Dont sink it, only run if your extremely confident and practise on smaller water at first.
My attak runs like a champ, but had some sketchy experiences with wae getting on the belt. Im certain the water is getting there when the water splashed up on to the bottom of the running boards goes through the holes , then runs down the tunnel into the engine bay, which is then sucked up my the clutches very slightly. I have had this happen when suddenly the sled would power off while running (feels like the brakes put on) then the power would come back, but it would only go away for a second. This only happens when your sitting down while running, it never happens when standing, im thinking because your boots block where the water goes through the tunnel.
Not much water is sprayed by the sled due to the skis, so its not getting in through the cracks in the panels, and a video and still shots shows that no water is sprayed.
It runs water best at high speed, and will hold 150kmh over water easily.