Five fin setup

Hey everyone, if figured if anybody knew about this fin setp, it would be here. I have 9’ Vince Broglio, it has 2 FCS plugs on either side, as well as future fin boxes slightly behind it, and an additional FCS plug in the rear. Its a wide gun shape, and just wondered what the purpose of it was. Any help is appreciated. Im stumped.

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Is it that stupid of a question?