Windvane Steering Necessary for Long Ocean Passages?
I have heard that twin headsails can cause some boats to roll quite a bit. also that its important for the clews to be cut very high so that the poles for the headsails are high off the deck.
Someone once told me about a fellow who had adapted two large jibs to twin headsails by sewing the luffs to the same bolt rope and running them up the roller furler. He could reef the headsails simultaneously by rolling them up part way...that seemed like a clever idea.
Its not really surprising to me that the NorSea self steered better up wind. Hard on the wind I could lash the tiller in place and it would steer itself for days. Off the wind was when it got fussy and the vane paid for itself.