Originally Posted by captflood
looks to me like the down-haul for the main sail looking by the sliding track on the first pic.
The track is on the front of the mast and is surely a spinn pole track...
Originally Posted by CalebD
Could it also have been used for a Barber hauler??? Hence, both sides of the mast???
Actually this make sense, esp given the snap shackle (which wouldn't work all that well for a cunningham) and the lead 'across' the mast section doesn't work for that either very well..
I'd be surprised to see a barberhauler on a Cal 29, but there you go....
Pole downhaul is also possible, but it's not the usual way of rigging one. It would have the advantage of not needing adjustment on every guy trim, but lacks the 'foreguy' forward pull that helps keep the pole on the tack, making twingers pretty much required.