RN Tubbies installation Question

[blastertrx]

I have a 96 round nose, I just got some Blowison tubbie 1's. I ride surf mostly. How far forward and how far up do I mount the tubbies?

 

[Vortex]

Further FWD and a slight step off the bottom of the hull side is a bit more aggressive turning, further back and down is a smoother less aggressive turning style. I would guess about 34-36" from transom to rear edge of sponson is a ballpark to start mocking up. That is where I put my pwr sponsons but those might be longer than tubbie 1s

 

[blastertrx]

Further FWD and a slight step off the bottom of the hull side is a bit more aggressive turning, further back and down is a smoother less aggressive turning style. I would guess about 34-36" from transom to rear edge of sponson is a ballpark to start mocking up. That is where I put my pwr sponsons but those might be longer than tubbie 1s

Thanks

 

[Geob]

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