Get a sailmaker to put second tack and clew eyes/d-rings where you want the reef, and some across the new foot so that you can tidy the sail with elastic. just like a Hobie 16 mainsail has got
Make up a wire strop the right length to add in between the headboard and the halyard shackle so that it still hooks over the lock at the masthead. You may need to capsize the boat to get it to hook up.

Don't use the spinnaker if you are reefed

Don't singlehand a 2-hander if you can't right the boat after a capsize