I tested out a couple props on my Suzuki DF 20A EFI/ Skimmer Skiff 14 (Old IPB14) and tought I would post the results as a point of reference for others.
The engine comes stock with an aluminum 10 pitch 9.25" prop. With two in the boat and gear, I was getting 24 MPH top speed by GPS with no tabs or hydrofoil. With the 10 pitch prop I occasionally hit the rev limiter and the engine sounded like it was spinning a LOT of RPMs (I don't have a tach).
I switched to a Solas aluminum 11 pitch 9.25" prop with the same two guys in the boat, I was getting 25 MPH by GPS. I never hit the revlimiter and the engine sounds like its turning slightly fewer RPMs.
Today I was out by myself. I installed a Marine Dynamics Stinray XRIII Hydrofoil. I got a top speed of 26 MPH by GPS and the boat gets on plane much quicker.
The engine comes stock with an aluminum 10 pitch 9.25" prop. With two in the boat and gear, I was getting 24 MPH top speed by GPS with no tabs or hydrofoil. With the 10 pitch prop I occasionally hit the rev limiter and the engine sounded like it was spinning a LOT of RPMs (I don't have a tach).
I switched to a Solas aluminum 11 pitch 9.25" prop with the same two guys in the boat, I was getting 25 MPH by GPS. I never hit the revlimiter and the engine sounds like its turning slightly fewer RPMs.
Today I was out by myself. I installed a Marine Dynamics Stinray XRIII Hydrofoil. I got a top speed of 26 MPH by GPS and the boat gets on plane much quicker.