Rigging the mainsheet to windward to centre the boom

One of the limitations of the Alacrity often commented upon by owners is the fact it has a horse (the metal bar in the videos below) instead of a mainsheet track. At least one owner has installed a track but the construction has to both go over the tiller and remain strong throughout its length; not the sort of engineering I want to take on, especially as the benefits may be limited in comparison to the effort involved in the installation. That said a track makes it possible to bring the mainsheet to windward in light conditions to improve performance when beating or reaching.

As a compromise I have found the use of the line shown in the videos below to be easy to rig, very effective and easy to release and bring across as Little Grace goes through a tack or, if necessary, once the tack has been completed.