Bigcam.... do as you wish (of course ).....

I just brought this up as it seems your a new boater, and often times new boaters are their own worst enemies, and end up unknowingly creating problems for themselves, then they get frustrated, blame the boat etc, and quit RC boating.

An even a "slighly" out of balance prop is going to cause you problems over the long run.... the strut will wear out faster, and the extra vibration is going to cause things to shake loose (head bolts on the engine. engine mount bolts etc).

You'll likely get away w/things for awhile....