I just bought the tool, and came here to find the best way to do the job and found that your explanation and method is the best I have seen here. Thanks for the video.
Thanks for making the video. I subscribed and gave your video a thumb up. Recently a friend loaned me a Loos Tension Gauge. It helped to set all apposing shrouds to the same tension. Most importantly, the rigger that just helped me reinstall a new head stay, inside of a Profurl, was making mistakes at several steps. (I have been crossing oceans for many years and needed proper help on the reassembly). I really felt he had over tensioned the back stay turnbuckle, but how would I know for sure? Checking with the Loos, the tension was off the chart. I undid the turnbuckle by 1.5 turns and that got me onto the chart within an acceptable range for my 3/8" wire on my Valiant-40, all with no obvious droop in the head stay foil. Previously, I had too loose of a tension on the back stay, which damaged extrusion joins and chaffed the sail at the joins. So now we check mast rigging by sighting up the mast, twanging the stays but finish off with the Loos.
