Humming fins....?
I bought myself a little birthday present, e.g. a new board (you have to spoil yourself sometimes!). It's a Roger Hinds Tamago 7.4ft which I surfed today with a True Ames Greenough 4A 7" single fin and True Ames side fins. I had a really fun session but the fins are humming when the boards get's up to speed......?

What makes the fins hummmm.... do I need to do something about it and if so how can I prevent it.

The boards is currently nicknamed buzz Lightning but I am hoping we can change that name...