Someone else in my duplicate thread over in gear swap says 155cm is flush and "brushing" against the dirt. 160cm (63 inch) is airier.
Regardless I it's easy to hacksaw the Ruta Locura .6" carbon pole, just tape the end to keep the carbon fiber tight for a clean cut. I will error on longer. Slanting the pole when inserted will give some flexibility, only if long enough. There is ONLY one downside from ordering a section longer; it will cost a tiny more money.
My current length: 125.73cm / 49.5 inches
Zpacks reccomended 48 inches for the hex solo.
125.7cm – 160cm = 34.27cm = 13.49 inch needed!
current pole length avg = (4) 14.5 inch so a new (5) 14 inch will fit nicely and give me 160cm to test.