Best fin for Hobie Alter Classic Model

I have a 9’6 Hobie Alter Classic Model and was wondering what the best fin would be to give it that nice classic glide? Right now I have a 9" Fins Unlimted wood fin but I really don’t like it. I was thinking of either the Rainbow El Gato or something along those lines. The board is 50/50 rails, 5 stringer Volan glass with deck and tail patch. Really beautiful board just needs a nice fin to make it ride as good as it looks.