On an TheMightyHobie18, we tie a bungie on the dolphin striker strap, run it up to the diamonds and back down and tie off - a kind of upside down V shape. Use enough tension to keep it snug, but not so much that it interferes with mast rotation.

Probably not the right forum, but frankly, I'm not sure which one would be correct either.

Jeff R

H18, C2 USA1193