The hobie 16 was originally reefable. The points were in the middle of the second panel from the bottom i think. Your plastic tip will make for real trouble reefing. Maybe you should just make a pigtail, flip the boat on the beach and lash the head to the mast so it won't pull out of the plastic track.
If you make a new mast, the supercat has a good locking system that will accomidate 2 halyard locks. the hook is at the base of the mast inside the luff groove. A second swage stop can easily be installed on the wire halyard.