I have a Zodiac Medline 500 with a Yamaha F70 4 Stroke, it has the standard white Yamaha prop on it. At WOT around 6100 RPM I tend to get around 29 Knts give or take a few depending on the load on board.
Had the boat for over a year now and I am now wondering how much more speed It could do with a different prop, I have no idea how the different types of props affect the speed and performance so if anyone could help it would be greatly appreciated.
I have found the Performance Bulletin
for my boat and it shows a top speed of 39 MPH, Is the prop used there the standard or a different one?
Thanks for any help