BTW, this is the fin config I use on my small wave board: the One above, and the "Moblog" 9'3"longSUP below:
Al Merrick twin fins front for hold, even at low speed, but with more speed and fluidity than the MR.
Tom Carroll rears of the FCSII SUP quad set, their tiny size keep the tail loose but the low aspect ratio keeps them predictable. I would sometime track straight with stanrdard FCSII quad rears
Tom Carroll fronts are reallynice,but too small for my weight for slow waves.
Hoping Quobba make twin fins in the future :-)