It floats and moves but I was unable in nil to light winds to get the top batten to "flip" when I tacked.
Too/Little tension, stiffer/less stiff batten or what?
Yes stupid I know.

Search the forum using the box in the upper right; you'll find this question has been answered before.
Kicker tension helps I think.

Upper LEFT actually - on the forum homepage.

Surely worth a link from the front page ;)

Surely worth a link from the front page ;)