The guy on the dock next to me with a Hunter 25 had something I've never seen before, reefable hank on jib. It had a second clew ring above the standard one, and ties to hold the extra cloth. I sailed with him one day when it was blowing a a steady 25 mph and it worked really well.
Gary H. Lucas
That set up is an old one I had it on my first boat, a 80 year's old traditional boat
Funny thing is that now some racing boats are using it again, so I guess sailmakers will know again how to make them properly. They even do that to gennakers and they use a zip to put in a kind of bag all the sail that was taken out with the reef.
They are using it on the 40 class racing boats. They have a restricted number of sails to carry on a Transat so they use reefs on the front sails to provide more flexibility and versatility