Double Spinn Sheets
I can''t resist this one. I have set up my boats and others with the pole jaw opening upwards ever since an incident 13 or 14 years ago. A downhaul block broke and the pole skied into the mast (nasty broach). The rather fat aluminum casting became jammed in the mast car ring, and little could be done until the all the pressure was out of the Spinnaker (trailing behind in the water). Once stable (and out of the race), while trying to free the pole in haste, it acted as a lever, and the car was destroyed. I''ll vote for jaw opening up on my 3300# 30 footer with an SA/D near 30 and a 900+ sq. foot spinnaker. Another benefit is that the outboard end can "fall" downward and away from the guy before the gybe. It''s easier to release using gravity.