Have you tried the Jiggle Jibe yet, heading closer to the wind
to loose speed before hardening the foresails, slacking the spanker, and rudder
to turn as quickly as possible.
If this reduces the distance lost
by jibing it's a significant improvement.
You can move the islands to make reasonable target paths. And change the sail and mast
positions too, when you feel up to it. (This simulation does take huge amounts of time.)