[SVTatia]

I also had the Walder but it worked well on the over 30K miles I used it.
I did not have a preventer, and never needed one, and had several accidental but controlled gybes.

Don't rig it to the chainplates, they are not designed to take side loads. Install strong pad ayes both sides just aft of mid boom. You will have to go over the lines when the brake is rigged (down wind), but this is the price paid for safety. The windward line goes to a free cockpit cleat.

 

[SVTatia]

Hey SVTatia. Did you disconnect the brake when going upwind? I would slacken the line but the brake always jammed when tacking. Drove me crazy.

I kept the brake rigged all the time and yes, with the lines either slack or coiled out of the way at the mast.