hey doggie,side fins are,i dont know

its on the website. i ran my centre fin just a bit past centre today.first day i have been on it,in 2 to 3ft beachies. thought it was really loose,mind the fact i have been on a lb for a couple of weeks now. will have a play with in the next few days,but so far i think it feels great.ps i been stomping my back foot right on the tail and it goes great. not stiff like what you said.

yet i have had more fun my lb,so go figure hey