Re: jgnafrica
I agree. Your boat is a compromise. If you aim to high on top speed, you'll be lucky if the boat gets out of the hole. Unlike a car where you can choose different gearing underway, your boat needs to be able to lug down low to get on plane and keep the RPM within the proper range when running wide open. Your boat is, in essence, always running uphill. As such, your gearing and propeller selection are generally the best compromise that accomplishes both as efficiently as possible without giving up the ability to do one or the other.
That said, you may be able to work within those bounds by making sure you are getting the best performance from your existing set-up, .ie peaking at proper RPM, etc. If not, then a different prop may be in order, in which case you may see a bit of a performance change.
