Instead of Norseman, you might look at Quick Attach fittings. Article from GOB here.
Good Old Boat, Quick Attach, Sta-Lok, Norseman, swasless fittings
They are available from Bo'sun Supplies. I used them on my Alacrity 19, and they worked fine. The only thing to be careful of is that the three jaws are held together with a little rubber band. Don't lose that rubber band.