I'm trying to figure out a good starting point for a prop on my 28ft Bayliner. My concern isn't top end as much as I just want it to get on plane a little easier with a full load 6-8 passengers, 300 litres fuel, 100 gallons water. I'm thinking a 14.5 by 15 is a good starting point. motor is a OMC 460 WOT around 4500. any opinions much appreciated. Thanks