We've used the line bale on the Tornado Alu mast retrofit for spin...used 1/8" spectra and it lasted years (that stuff is slippery). The new Carbon stick comes with the solid bale already fitted.

With the line bale, the concern was introducing two knots on the inside of the track, which might hinder main sail bolt rope passage, depending on precisely where the holes were drilled. The solution here was to dril two holes per side, one above the other...and pass each end into the track then back out the other hole, placing the knot on the outside.

Also, the original post picture is not how we rig the halyard. Instead of running the halyard up to a cheek block then back down & out the bale, we run a single block tied to a strop. The strop is attached to a deckeye well above the bale. The block attachs below the bale. This way the halyard never can go higher than the block below the bale and there's no additional length of halyard line doubling back like with the cheek block setup (windage).