I love my router. It makes the fin box installation soooo much easier. Put the fin plug jig on the fin marks and route! No, it is not that easy. First of all you need to know where to put your fin marks. Then you need to put the correct depth on the router, it is different between the trusters, mid and quad fins. But then it is not that hard to do the actual routing!
Here, I have routed holes for FCS fusion fin plugs on 6’1 early version of a “Torö Ripper” that I built a few years back.