I installed a 1:1 tack line on a 2006 Capricorn and ran the line through the front beam rather than having an exit on the pole. On the back, starboard side of the beam, I used the same double exit block that Tad has pictured, and then ran the line through a mounted Spinlock and out onto the deck. Ran well, but I don't think I picked up anything in buoy racing. In distance racing where the shape of the spin is more important for reaching, I think a separate tack line is a good idea. On the 2009 Capricorn, I did not feel the need to change the stock one-line system; it works great.