I would think it should be installed more inboard to the centerline to put it deeper in the water. Also check that there is nothing forward of the xducer that would cause turbulence. Before you drill more holes to relocate it, read up on placing it in a bag of water in various locations in the bilge and run some tests. I would expect at least 20 knots before loosing bottom contact and if well placed it should work at WOT. Capt. George
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