Quad setup, what size finboxes & fins?

[paddledaddy]

I am having a local shaper (semi local in Cocoa Beach,FL) build me a 10'6"quad plus center box setup something like the Joe Blair SUP boards. He uses the Future Fin boxes for the quad, but I don't know what size to ask him to use. I guess I need to be able to tell him"use boxes that will fit an X" base fin here and a Y" base fin there." I could just leave it to him but, things are changing so fast with SUP, I think the knowledge here might be the best advice. For instance, I though I read somewhere that quad SUPS work best with 4 fins the same. Any opinions?
I did try out the 7S Uberfish wish has one set of smaller fcs fins and one slightly larger. I tried it both ways but don't remember which way was the better, although one was definitely better. I guess the Naish and Starboard quads are quite popular as well, but I don't know size fins are used there. Help!

[vertseven]

Richie Buhen from Indialantic shaped my board. It's a 11' quad fish. I run k1 keel fins in the front and regular trailer fins in back. All futures.

[Yannick]

don't go with the x boxes.  The recesses that the fins go into are shallower, and the whole box is shallower as well.  You'll have to use fins that are designed only for the x-box vs. the entire range of fins already out there.

Tell Roy I said hi!

[paddledaddy]

Okay I have it figured out now. I called the Future Fins Distributor for the East Coast. I just need 4 fin boxes 3/4" deep to allow me to use more or less any future fin in any box.

Yanick, either you're psychic and I am paranoid or you have been following me. You are right, Roy sold me the board and it is being shaped by Stu Sharpe. This is the first time I have dealt with them and it all seems good so far.