Three blade, four blade or..loop-blade?

[BC Coast Pilot]

I'm not sure about Sharrow's prop. It looks impressive... but all marketing does.
I have a 3 blade stainless prop and terrible milage. If I had a 4 blade could I expect better?

Not necessarily, the Enertia Eco's I run are a 3 blade and gets better mpg than my 4 blade Rev 4's

 

[BC Buoy]

Not necessarily, the Enertia Eco's I run are a 3 blade and gets better mpg than my 4 blade Rev 4's

I checked their youtube videos. Quite an art to picking a prop.

 

[BC Coast Pilot]

I checked their youtube videos. Quite an art to picking a prop.

Their prop selector is surprisingly accurate, but remember junk in = junk out