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| If your boat is set up in a manner that allows for best handling and overall top efficiency, the anti-cavitation plate SHOULD be at or even above the water while on plane. Most boats are not set up that way from the dealer. The reason being is the majority of the population does not tweak their rig for peak performance and the position the dealer mounts the motor is for decent handling without a huge amount of drag. That is why they usually put the anti-ventilation plate flush with the lowest part of the transom..but...that puts the anti-ventilation plate BELOW the water line as the boat is on plane...The water fills the hole the boat made immediately after the boat passes.
That is the main reason why a foil will only work if the anti-ventilation plate is in the water, or just skimming along the top of the water due to the lift Characteristics it supplies. It provides lift as long as it is in contact with the water.
If the comment was made with the thought of losing water pressure, one will not lose enough pressure to cause ANY damage or worse yet burn up the engine IF they stay within the designed bolt holes on the motor. When a jack plate is added...that is when water pressure can become an issue. | |
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