I'd make up a short bridle consisting of a line about 20 foot long (actual length to be adjusted from experience) with a figure 8 loop in the center and a pair of shackles at each end. Lower the pole so it is horizontal and on the centerline of the boat. Connect the shackles to the toerail/stanchion bases halfway between the bow and mast. Setting the figure 8 loop into the non-mast pole end, adjust the length of the line so the bridle is taunt, keeping the pole horizontal on the centerline.
To raise or lower the pole, dig out the bridle, attach the shackles, and clip the figure 8 loop into the lower end of the pole. You should find you can fully raise and lower the butt end of the pole while movement of its outer end is constrained by the bridle. If not constrained enough for your liking, try using shock cord for the line.
Certified...in several regards...
Last edited by sailingfool; 02-25-2009 at 05:23 PM.