Hey Thom

I forgot to mention. I took my vang off--it has a snap shackle
at each end and used it for a preventer. It worked well with
the wind was light and waves rocking the boat. The sail would
still slap but he boom didn't bang around.

I snapped it to one of the shackles I leave on the chain plate
for making off the spinnaker halyard when not in use.