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SpokeyDoke said..
hmmm...this kind of thing can drive me crazy...if it does actually make a difference...do we know that?
The Quobba founder, Glenn Miller, wrote me some time ago that basically nothing makes a lot of difference in the 4mm layer of water close to the hull. (if your hull is properly sanded, not glossy). So the handle should not make a difference. Just as open fin boxes does not make any difference. Water fills them anyways.
He wrote:
"Quobba now know from CFD analysis and in-surf testing that 'surface drag' is the most drag that holds back speed on a surfboard.
Surface drag occurs along "the lower part of the fin", where water travelling just above the surface of the surfboard is really slow moving and sticky!
In this respect, our CFD analysis shows that up to a height of say 4 mm off the board (that's above the fiberglass bottom surface), is very turbulent and slow and really needs to be avoided at all costs.. if we can!!.
Therefore, we 'lifted' our 'Shifter' fin above that turbulent, slow moving water flow that is say from board level to say 4 mm high."