Two holes per fin, perfectly aligned.Well the FCS seems like it would be easier cuz you just have to make the hole in the board but it seems with futures you have to rout a perfect line or something.
One slot per fin, perfectly aligned.
The router guide helps a lot. Futures is a 10 minute job, start to finish, with no ACETONE (FCS you are supposed to acetone clean the plug), and no extra resin steps. The Futures you route in the FOAM, not the glass, and slap those plugs in, glass over.