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    cavatation plate position

    I have a 1969 fiberglass tri-hull bass boat 16 ft with a 1969 Johnson 33hp my boat will not fully plane but gets close! I have found that the cavitation plate is 3 1/2 inches below the bottom of the boat. is this keeping me from planning?.i would guess top speed now is maybe 20 mph but the bow...
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    new boater

    i have a 1969 -16' Alpex by Alumacraft fiberglass tri-hull with a 1969 Johnson 33hp . after reading in the iboat forum i discovered that boat and motor are mis-matched maybe . i have a 20" transom and the cavitation plate on the motor is 3" below the bottom of the boat . i measured from the...
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