Its the tack line which now runs down the spin pole and out (angled) towards the starboard (underneath) front beam:

Feed the tapered end of the line into the spin pole exit slot (an elongated hole on the starboard face approximately 1 foot forward of the base). Run the line all the way through the pole and exit in the middle of the spin pole end plug. Tie a know here so the line will not pull back through. The covered end of the line will now feed around the back side of the front cross bar, and through the following in order: Cheek block -- Tack release ring -- Tack cam cleat -- Pivoting lead block located on the starboard inside face of the front beam. Once through the pivot lead, tie off the end to a convenient lacing loop on the trampoline.

Tack Release: Feed the end with the loop through the grommet in the center of the tramp second aft of the trampoline pocket. Once below the tramp feed the line onto the small plastic ring and tie the larger metal ring on to the end. This should freely reach the front cross back face between the cheek block and the cam cleat.. Tie the second shorter piece of 3 mm line to the small plastic loop. This will then feed up through the grommet located at the forward end of the starboard foot strap. This adjuster line will then tie off to the foot strap. to Properly set the tack release first: adjust the length of the primary line so that the ring just touches the front cross bar at the face of the cam cleat with very little ton no slop in the line. Now tension the adjuster line, tied to the foot strap. This should be set so the small plastic ring is just in line with the opening to the cleat. If excess pressure is required to release the tack line while sailing , the adjuster line is likely too long.