I have two super bungies just for that purpose. They are 1/2" by 2" thick
pieces of stretchable sort of rubber but it takes a lot of pressure to
stretch them, both about 3' long. Came with my last boat and they are
going on the new one for use as preventer snubbers. Work like a charm in
winds that are consistent.

M.

"SAIL LOCO" wrote in message
...
I've also seen big boats with
solid vangs put a bungie cord to the lowers from the solid vang to hold
the boom out.

Think I'll try that next summer.
S/V Express 30 "Ringmaster"
"No shirt, no skirt, full service"