Hi Bruce

Wow great responces ,-John is correct ,{as usual } on the furler -snuffer choise ,-John,s the designer of the Stealth series of excellent cat designs .
Phils great 17 site was fun to review ,-{great sence of humor too } liked the Jesus line ,though have never heard it called that before ,-other names are chicken line or anti round the bridle wire line or safety line ,-these are an absolute necessity at those speeds in seas .
I like the type that runs from the front crossbeam to the stern with shockcord retrival line into the crossbeam .
This type of line along the entire length of the deck edge ith adjustable climbers knots to change OR slide lead locations where they are needed and the addition of a loop and ball attachment--line to harness-- /easy detachment is the best setup -
Many past Worrell and Tybee 500 racing teams use this type of set up for the high winds and seas encountered .
Can.t tell you how many times it's saved me from a severe pitchpole and another sailing related {religious experience }

For the snuffer as John noted some type of simple mechanical assist for the spin halyard for setting and snuffing . Some should experiement and try a small light high speed winch type system also .

The only other option I could think of is a more radical design development of the spin -rig set up ,and spin system basically consisting of a horizontal furling system. --much like is used for battened mainsails ,--collective {what the h}-
Its not practical yet but would involve furling the smaller flatter spin from the bottom foot . A furler set at the end of the pole set horizontally towards the foot rather than vertically up the luff . This would require a battened type designed spin with a batten on the foot to furl on . Some sailmakers have experimented with this type of sail but found it not as versital in light air ,--but as a high speed sail it may work very well .
-Furler leads are needed ,swivels on the furler and sheet line leads , gybes would have to be round the front -luff rather than between the luff and forestay s .
In experimenting with this suggest raking the mast as far back as possible and using a longer spin pole length ,-
The more luff angle the more potential verticle lift the headsail will provide .--Check out the Aussie 18 skiffs as example ,--

The foot would of course have to be shorter than the distance from the tack to blocks and the battened smaller flatter headsail would roll down but still need to be hoisted .

The advantages of a battened headsail or one with a battened foot over the current asymetric spin that have been developed extensively would have to be experimented -refined and developed to be practical .
Fun exercize to go through the possible design scenarios ,-hope its helpfull.

Carl