For both furling and self tacker you need vertical battens. I put a furler on my 20 during the 2000 Worrell 1000 and promptly removed it. I don't like the way the boat behaves with the jib furled and it was easier for me to control with it out. I still have the complete custom Harken set-up for the 20 if you're trying to find one.
For jib traveler ,I just used a line from the car through a bullseye to a cleat. Pretty common set-up for self tackers.


"I said, now, I said ,pay attention boy!"

The cure for anything is salt water - sweat, tears, or the sea
Isak Dinesen
If a man is to be obsessed by something.... I suppose a boat is as good as anything... perhaps a bit better than most.
E. B. White