Simon, I have a Lodestar that is still under major refit
. The standing gang is in place. I will check my tension this weekend and post next week. Brian Toss' Rigger's Apprentice has some guidleines for tension, including differential between the shrouds and stays. I would recommend this book. In my expreience, a wood spar should always be rigged softer than an aluminum
, but if your leeward shrouds are flapping in the breeze, it is too loose.
Since my boat has an aluminum spar, the tension will be different, but the difference between the shrouds and stays should give you a starting point.