Spreader lights are great
I've had the older, round, clunky sort for years on my 1980 H33. They are great - I mostly use them for loading and unloading the boat safely at night at unlighted docks - but if you install them correctly, it would seem that the sails would touch them rarely, if at all. At least on mine, I don't have the problem, even though I use a 150% Genny a lot. Also, if you are worried about someone seeing you at night - turn em on - you'll lose your night vision, but 500 square feet of white sail illuminated is hard to not see if anyone is looking. I wouldn't want to have a boat that was used reguarly at night without them.