Re: Holeshot
Without rpm the speed is pretty meaningless.Something like a Tinytach is reasonable and easy to install.With rpm and speed and a performance description,boat weight,deep V or shallow V all the way to the transom. we can tell much better what is needed.Need a better idea of your hole shot.To some dogging would be 30 seconds to plane others it would be 10 seconds.
You'll also need the tach to be sure your prop selection is allowing the motor to rev freely within its rpm range.