Have a 2001 Yamaha XL800 that the hull fills with water in just a few min. or less. Plugs are in and tight. My daughters boy friend cut the hose that covers the impeller shaft wear it enters from the rear and goes through the hull to engine compartment. It also goes through a bearing before entring the engine compartment. The hose had clamps on each end. Is this were the water is coming into the hull? Bare with me please. i dont no much about them. I have replaced the impeller myself a few years back. Why that split this hose I have no idea. The ski ran great until it filled with water fast. thanks for any help or advise Keith