Chris, the best improvement I have made to my spinnaker hoisting and snuffing is I changed out my halyard to a tapered one, 3mm dyneema for the first 25 feet or so, then 50 feet of that soft mafioli type stuff (4mm?) so it never kinks up at the grometts or blocks any more.

I had mine made by Mike Krantz at Layline (cost about $120, the tapered splice was $29) but Andi uses straight 3mm dyneema for his entire halyard, no soft stuff at all, but you will want to be wearing gloves to hoist it when it's blowing. You can insert a small peice of the 3mm for about a foot where you will be cleating it, to give it some fullness there.