prop

[fish]

Got a '99 150 yamaha on my '86 v-20, wondering what the best size stainless prop would be

[steplift20]

I don't know if this is right for you but it's a good start
I have a 1988 150 mercury outboard and I turn a 15 x 17 prop and it's perfect now it's not stainless steel it's aluminum I don't know what the differance would be I know the heavy hitters will give you better advice but for me it's 15 x 17 Perfect fit