Quik,
of course you can do just a v-stretch, inverted or not, with your finger - but that is not what Mem suggested (and had good results with). If you read the two threads I suggested (at least the very end of the LOT Theory and the “Bib has spoken! A new hanging technique…”) maybe you will agree that the connection between those two and Mem’s routine is intriguing.
Short version: v-stretch puts load on one short area whereas stretching over a curved surface allows a better spread of the load, and might just make sense considering suspensory lig “blending” into the top of the tunica to create the thickest area of the tunica.
When it comes to forces, Newton explained that one a long time ago - the force of one hand will be equal to that of the other. In a v-stretch over a ballbearing, in theory the v-stretching finger will take double the load as the one pulling the head, but in reality it will be less (inner moments in the tissues etc). But the balance will be the same - pull on the one and the other one follows, proportionately.
regards, mgus Taped onto the dashboard of a car at a junkyard, I once found the following: "Good judgement comes from experience. Experience comes from bad judgement." The car was crashed.
Primary goal: To have an EQ above average (i.e. streetsmart, compassionate about life and happy) Secondary goal: to make an anagram of my signature denoting how I feel about my gains