If he is talking about the type that you put under the motor when it is
trimmed up, then the answer would be no, that is more for the tilt
cylinder on the engine than the boat, however it is not a bad idea as
most engine manufacturers do not recommend hauling the boat around with
the engine trimmed up and just resting on the built in locking brace.
If he is talking about an engine bracket that goes under where the
engine is mounted then the answer would be yes.