Back.
No wait, I mean Front.
No, I meant back to front !

Haha, kidding... I'm having battles with fin placement on a Quad... We've got some ideas, and it might need a new setting / layout...
www.seabreeze.com.au/forums/Surfing/Shortboards/Rincon-68-McTavish/You're lucky, you only have 1 fin to worry about !