Prop suggestions please

[Brokenoar44]

I have a 2003 - 21 foot pontoon with a 2012 9.9 Honda motor. I think the prop was changed in past. What prop/pitch do you recommend for my motor? Any help would be appreciated. I do not want to hurt my motor.
thanks in advance
broken

 

[Stinnett21]

A 9.9 pushing a 21 pontoon would, most likely, require lowest pitch possible which looks like 7 inches according to iboats prop finder. But to really tie it down you need to gather information first. Many, many threads on this site to take you through this process.

 

[WesNewell]

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6 if standard engine, 7 if bigfoot