Prop for Yamaha F150?

[nomad]

I'm looking for prop recommendations for a Yamaha F150 on a 21' North River Seahawk. Would like to hear a few opinions before trying out multiple different ones to maximize fuel economy, hole shot, and speed. Currently running a 15 1/4 15 pitch aluminium . Anyone have a similar setup? Thanks

 

[happy hooker]

I have 18p 4 blade and 17p 3 blade. 18p 4 blade works best for me. Both aluminum. 150 4stroke Yammi, Hewes Searunner 200 ET