when to vang?
I have read a decent amount on vanging and been sailing for a few seasons now, but it is still unclear to me when and how to vang. I read in the Highlites that Sandy Douglas recommended vanging to bring the upper batten parallel to boom and in higher air--15 knots and up--to vang so the batten points away from the boom to spill some air. But then I read Gough about vanging staring at 10 knots and vanging so tight as to bend the boom 3-4 inches, getting the main very flat. But doesn't vanging that hard bring the upper batten in toward windward rather than parallel? Or, in high air, doesn't such tight vanging not allow the air to spill at the top of the main as Douglas advised. Any advice or clarification of what I am reading would be appreciated.