2012 f 150 yamaha need help with prop size

[crappie slab]

i have a 199 sprint fiberglass deck boat. with a 150 four stroke it has a 14 1/2 x 17 alum. prop. like too go with a 4 blade stainless steel runing right now about 5500 rpm like to know what should i replace it with in a 4 blade prop dont have much lift to get bow up thanks for your help <))))))))))>< bob

[Tromanoski]

I have a 21 P 3 blade stainless on my 2012 F150 which is on my Ranger Z118. It works really well. I would email Mark Croxton with what you have etc and see what he would recommend and then buy it from him.