4 fins?

forgive my fin ignorance, but can anyone tell me what I will gain from using 4 fins [on a Firewire Addvance 7'], what is the basic difference between 1 fin , 3 fins or 4 in terms of performance?
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You use a thruster 3 fin set now and you want to know what will happen if you go to a quad setup?
Tudeo wrote:The difference of 3 or 4 fins is different depending the board u use. I never tried a quad (4 fins) on my Addvance 606, but I read on the Firewire forum people don't like it cos the tail is too narrow.
Basically it comes down to trying it urself and feeling what has ur preference. I experimented with a quad on my Dominator 606 and didn't like it because my turns were much more drawn out (longer).
Big H wrote:I just got a dominator second hand and have had it out a few times now