Good ideas -

Thinking of the Worrell on the Jav ,-small narrow bows and a 33 ft mast ,--downwind in large seas gusting to 30 ---
Help Mr. wizard !! ---{old cartoon }

Seen the 16 reef system ,-like others the tendancy to pull the larger sq top sail out seems much more likely ,-even with an added ceramic or extended length slug added.
Do have a Supercat 15 with the internal mast groove wire halyard , but replaced it with a masthead hook halyard per Supercat retrofit. --wire sail stretch problems ,--hook is a better system .
-The location of the ring Hook down lower sticking out would shread a sail in 30 plus .
Have you ever had the mast shake violently side to side in lesser conditions , the mast rotates from forces side to side ,-
power gybes ,--many other situations . It has to be very simple neat and clean to work like anything else in those conditions .
Funny how the guys with masthead flys ,-gadgets and dohickies like plastic clips for traps and added adjuster lines seem to have everything get blown off the boat in those conditions . --The more things I can take off a boat the better I like it .
The only thing I came up with is to knotch an inlet in the mast track at the reef level desired and reinforce the sides of the mast track with stainless steel with same cut out shape to accept the ring at the mainsail top . The difficulty is then getting inward pull on the interior halyard to pull the ring inward into the reinforced mast track cut-out.
Believe if the sail was lowered all the way ,-the halyard then crossed over and rehoisted the main it would provide suffecient pull in .--Either that or a small seperate halyard line set up to that location to pull the ring into the reinforced mast track groove that would hold the ring in place and in turn top of the larger mainsail .

Think some sailmakers are working on this type of reef system now and may have a better solution .
Proper reinforcing corners at reef points -downhaul and clew locations ,-attachment means and rolling up excess sail area are also very important aspects ,--particularly in 30 plus winds .--
If it is much more than that I,m headed for the beach this time around .

Do we know how to have fun ,--yeeehawww-
This thread probably has the other crazies that love to sail in these conditions .
have fun - sail safe -