Gree, that halyard is gonna stretch very badly. I suggest you upgrade the halyard line to a lower stretch line.

The red line is New England "Sta-Set," and will stretch to the point that when the spinnaker is loaded (if you have wind), it will significantly change the luff tension on the spin. You don't want that. It's load rating is also not nearly as high as a higher-tech line.
It is important to use good line in the right places.