Need help selecting prop

[sjg0002]

I just bought a 1997 Glastron SE 170 with an 2005 Evinrude Etec 90 motor. The boat did not come with a prop, and I am having a hard time finding a starting point. Many calculators require more variables than I know. Anyone know a good place to start? I am looking for an all around prop to pull skiers, wake boarders, and tubes.

I think the RPM is in the range of 4500 to 5500 and the gear ratio 2.0.

Thanks for any help.

[boats.net]

Probably start with a 15 pitch.

[sjg0002]

Thanks, what about diameter?