After several posts trying to prop my boat right I've ended up with a Michigan stainless 19 pitch prop on my 87 gt 150 Johnson that is on a 17 foot Fabuglas runabout. I'm getting now 5600 rpm and 51 mph on GPS with my wife and I, 30 gallons of fuel and fishing gear and cooler. I'm going to say about 26, 27 hundred pounds total. Thanks in advance. Chris