WHOSE FAULT IS IT? If you skimp on care and maintenance, you deserve to be left out in the cold. But improper clearances, splashing bilge water, and shafts that abrade intake hoses are the fault of the boat manufacturer that installed the engines. Ask the motor company to deploy a field engineer to "sign off" on your new boat's installation before you buy. If it won't, threaten to select another engine brand, or boat, if necessary.