On Foot Loose, we have an additional block at the base of the stanchion abeam of the secondary winch. If your stern block is a ratchet one, it forces a near 180 degree of the sheet providing a good grip (but seemde to have been a stretch for the life of the ratchet...).
So the order is:
1) Spinnaker clew, 2) stern ratchet block, 3) forward block abeam the winch and either directly to the hand or through the secondary winch....
I do not have twings but I rig a snatch block on the base of the stanchion closest to the shrouds for the guy when needed.
