Hey Ken,
Long time no chat. The leash is set up as follows:
One end of a 3/16" line is fattened to the stern, the other end behind the cockpit. Another line has a bowline tied in it with the loop encircling the fore and aft line. The second line is your leash and can sllide back and forth. It connects to a quick release belt such as a towing belt. I fastened a length of bungee line to the leash and the other end to the stern. This keeps a bit of tension on the leash so that it doesn't bunch up or drag in the water. This set up allows you to get to the stern and clear a fouled rudder or deal with a broken rudder line. Remounts are easier for me without a leash on my calf. In big water the ski can be lined up fore and aft with the waves if you are pulling from the stern rather than broadside as with a conventional calf leash. There is also a light bungee that is fastened on one end a foot or so from the rudder and the other end has a plastic hook on it. This bungee hook is fastened to one side of the steering yoke should a rudder line break. This allows you to steer with one pedal. These are not my original ideas.
Cheers,
Ken