yeah, don't do the track...just rig up a barber hauler at the outer end of the beams. Basically, run your jib sheets (each side) through a simple ring - plastic is fine. Tie a line to that ring and run it through a block at the end of the respective beam. Arrange a cleat for this barber-hauler line. When sailing upwind, the barber-hauler is loose and lets the jib sheet right to where the blocks are. When sailing off the wind, you cinch the barber-hauler line (takes a split second) and it pulls the sheets to the outer end of the beam and gives better shape to the jib for sailing deep. Most systems run the hauler line and cleat to the opposite side of the boat since that is typically where you will be when setting it.