Yes you can ride quad boards in weed fin areas and these sweet new fins will soon be on all the quad boards in Punta San Carlos ! They are tested and approved by many pro riders and Andy from Wind NC in Hatteras rides them in the ocean even with no weeds. This says how well these fins work !
These weed fins are designed for moderate weed areas where you want to catch the waves but not the weeds ! They have a thicker base for upwind power often lacking on weed fins but no worries these wonders also have flex on the tip. We have been able to develop a new designing technique that enables us to play with the thickness exactly where we want it. This means less drag more speed and no weeds !