I'm in a similar situation: new board with different contours than previous. Last board took many iterations to optimize performance. New board is short, wide, single into double concave with some belly in nose. Split keel or speed dialers are my intuitive choice, but I see a variety of quad set-ups. Anyone have direct experience comparing split keel to a more standard 'neutral' quad set on the same board? What about 80/20 vs flat foil for rears? Scrolling through the choices I like the looks of the Album NVS Fascination and the Pavel Speed Dialers.