Prop suggestions for 185 Sport

[10sport185]

So I went and worked on it a bit tonite. The fuel filter hasn't been replaced since '12, has about 110 hours on it. I bought it last year and for some reason never replaced it. Removed flame arrester, it was pretty clean but I cleaned it thoroughly. Pulled dist cap,checked it and rotor both looked good. I'll see how it runs on Saturday. Maybe I was able to help it out.

 

[BSTN]

I have a 2007 185 sport and run a 19p 3-blade aluminum prop. Holeshot is great and top speed is around 48 with four adults on board. I believe the stock prop for these boats is a 21.