There are 3 ways to make a jib be self tacking:
A) club foot, essentially a boom at the foot of the sail, tackle to the end of the club, with falls coming down on each side of the boat, the leeward fall(s) pull the clew down and back and the windward fall(s) pull the clew towards centerline. Club is a safety
hazard bumpy conditions, and it is hard to get the leach to tension properly if I recall
B) cruising traveller, basically the same running rigging
as the club foot but no club. It is difficult to get good sail shape, decent isn't terribly hard.
C) radiused track just ahead of the mast
, sheet runs from the cockpit
forward to the tack, back to the traveler the up to the clew, optionally then back to the traveler to get a 2-1 mechanical advantage. There may also be a traveller line to control how far outboard
the sheet leads. Track is a tripping hazard if it is raised off the deck
and the clew requires a headboard-like fitting so the lead can be adjusted at the wind
strength changes and the sail ages. See Photo
of an Aphrodite 101.
All self-tending options require sail to be smaller than the foretriangle. If the boat has double lowers that is also a consideration.
The times I have seen club footed jibs they have all been really old boats or a newer boat with the club on the staysail and the foresail was loose footed.