I've got a Hobie Wave and have also been wondering about reefing the boomless main (for the same reason, 30-35 knot winds!). I don't think it would be that hard -- just get a sailmaker to sew in reef points (maybe 2 sets of reef points for the Getaway). Given the absence of a boom, you could put double battens in the pockets where your reef points are, then roll the sail up to the reef point, tie it together with sail ties and hook your main halyard onto the sail tie at the (new) clew. I don't think a second tang would be essential -- I've sailed a Hobie 16 many times with the halyard just secured at the mast, with no tang. One downside of having no boom is that when you reef, the clew moves forward so the mainsheet wouldn't be pulling vertically, and you would have a bit of rolled-up mainsail protruding out behind the (new) clew.
If you're thinking of travelling light, I imagine that you don't want to carry a sail wardrobe for different wind conditions -- reefing definitely sounds preferable, if you can work out a good system.
That's my 2 cents' worth.
2011 Hobie Wave with jib kit & mainsheet traveller