I own a 39' Kayot houseboat moored in a slip at Wahweap Marina at Lake Powell. The boat is powered by twin 70HP Evinrudes that were original equipment on the boat when it was purchased new in 1981. The port engine is all original, the starboard engine had a rebuilt powerhead about 5 of 6 years ago.<br />We have an occasional problem with hydrolocking. The wind tends to come offshore and astern of our boat, and I think that wave action may be part of the cause. <br />Our current remedy is to remove the spark plugs, hold an oil absorbent pad over the engine, and crank it briefly to remove the water. We then spray some WD40 into each cylinder, replace the plugs, and crank her up. Unfortunately, this can result in quite a bit of oil and gas getting into the water. I am also concerned about a potential fire.<br />I am looking for ways to prevent this from occurring, and if possible a cleaner and safer way to solve the problem when it occurs. Thanks.