Notice:
The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.
I would use a separate halyard that uses a swivel block because a spinnaker goes where ever it wants. That means to either side and in the middle which it would need freedom to pull hard from any direction and not cause wear. Try the spinnaker first in light winds and a crew that works with you. They are exciting and can take over your boat.
Reason #2: You'll want to keep the genoa up while you raise the chute behind it. As you drop/furl the genoa, the chute will fill with air. Likewise, raise the genoa before taking the chute down to maintain speed.
Normally the Spinnaker halyard is above the fore stay so that when you jibe the sail can go to the other side unencumbered. If you use the jib halyard it would get wrapped around the forestay.
Good luck. We just got our new Asymetric as well. Lots of fun!
Another niffty idea I believe came from Frank Hopper - a spinnaker crane. It a masthead attachment that gets the spinnaker block out ahead of the mast and somehat clear of obstruction from the forestay.
A small sprit, which I am working on, moves the tack out ahead of the boat, cleaing it from the shadow of the main and allowing a more downwind capability.
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.