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It would but would also eliminate any 2d readings at speed. I always ask for the extra in hull ducer for this reason.

Ducer, or it could be a Atlas plate, if you have one, if they mount the motor too high on the JP the rods stick below the JP a good amount.

So while your running your getting sprayed from the transom? Had this happen on a ranger the jack plate would scoop water in the waves shoot it straight up to the motor, the splash off the motor...