Hi all,
I usually run my Quatro glide as a quad; it's thruster standard, but I am just too lazy to fiddle around with that US fin box. But I bought some quick fin attach screw, which are spring-loaded (I don't recommend them just seems a little bit spring-dependent) and tried the board with a longboard fin that I had in the car. Waves where small and a bit dumpy but I had the time of my life. The board tracked fast and straight, as you would expect; a little hard to turn, but still what a change.
Fins really do make a world of difference, and I consider myself the eternal beginner, so I am glad I could feel such a dramatic change.

Henners said..
The board tracked fast and straight, as you would expect; a little hard to turn, but still what a change.

Try to put the longboard fin at the front of the box, and remove the side fins, you will be surprised by the gain in paddling speed and ease of takeoff.
And the fin in the front will give some nimbleness.

What you lose is grip when rolling the board in turns, but it will teach you to better use the rails to compensate, the key to nice flowing carves.