How's you'r neck siny?!!

I have changed to some FCS TC white line - a bit smaller and stiffer than the stock RF fin but nowhere as stiff as the SRT fins.... They feel slow and dragy, like i have weed on the fins. The first time I tried them i kept turning the board over because i was so sure there was weed on them.
I was really happy with the fins that came with the board, until they broke, they are so much faster and looser than the others I have tried.
Presto has some FCS fins he is happy with, he might let me put them on my board and have a go.
When you come back we can swap boards and compare