My good fellows,
To Don Williams : The conversion is very pleasant and pretty well done. Moreover, bare feet are not a real problem for ancient civilizations, by good weather, on a soft or slippery ground. The work on the base inspires me a lot. Interesting work.
To our two other comrades now... Up to me, the problem and its solution are simple : there is no theorical and universal model, but a practical one, based on reality and efficiency (long or short bow and arrows, foot or mounted archery, bowman in movement or not).
In historical archery, holding the arrow on the shaft (le fût) was practiced both on its left side and on its right side. The important thing is that the arrow does not slip or fall in action.
Practically, when the arrow passes to the left side of the shaft, the bow is often tilted slightly to the right. When the arrow passes to the right side, it is necessary to use the "hollow in V" between the thumb and the index to hold it. In this case, the holding of the bow is often vertical.
As former reenactor, I invite you to go in the forest, with your love, your children or friends, and make natural bows and arrows. Try the two (of three) main methods on your own : I'm certain that you'll find the good, natural and efficient way of holding a bow and shooting arrows !
Here, we have unskilled archers, what a pity ! Given the inclination of the bow, there is a serious problem : the arrow, placed under the shaft, will fall down, for sure.
Tschüss ! Adeus !