I don't have them. I believe the Alter Cup boats have them.
My problems lie more with the board staying down while going upwind, which will be fixed this weekeend with a short piece of bungee.
I had that problem- the leeward board wouldn't stay down and the leeward wouldn't stay up when I wanted them down halfway or so when the wind was honking. I fixed it with several small felt pads at the bottom of the well.
