Hey I got a fun board and curious what a long board fin would do if I just take off the short 3 fins?

It is an 8'2".

Just board and thinking oif surfin and please score some surf because I got fam stuff all the way till tuesday night. It is killing me seeeing the swell in the water tues. so take some pix for me.Wed better have some leftovers! I will be praying