Interesting - ok - makes sense.KidCurry shoots three under string walking. The metal peg is not for the purpose of separating his fingers for Mediterranean style, that's why it's just a peg rather than a finger spacer. I believe, from my failing memory, that he uses it as a locator to ensure that the tab is in the correct vertical position, which is important when string walking as moving the tab up or down in your hand is the equivalent of moving your sights. I suspect it also helps with any tendency for the tab to rotate. After he initially put one onto his Spigarelli tab, I tried the same on my barebow tab and it greatly improves tab stability.