I've just purchase a used boat with 150 Merc Optimax engine and have a question on flushing the engine. <br />It is my intention to flush it regularly and here is my problem. I have arranged in/out storage and do not have access when the boat is out of the water. I can however flush at pierside prior to the boat being removed from the water for inside storage. I have access to running water, etc. Can I flush the engine while the boat is still in the water? Can I just trim the engine to the up position to remove it from the water? Will the engine start in this position? Can it be flushed this way? Thanks in advance. If possible please e-mail your response. to:<br />audioparts@aol.com