Ross,

I can see the heart yin component that you are pointing to and it makes perfect sense. With herbs I've often used Gan Lu Yin when hesitant is seen in combination with a predominantly tight pulse on the right side. Back in the day Leon described the Hesitant pulse to me as "a push pulse where the person is overthinking more than overworking physically."
I see the Hesitant quality nit just on tight (yinxu) pulses but also frequently on tense (Qi stagnation/heat) pulses. Of course, yin is being depleted but stagnation is still the primary issue. I notice addiction to thought, worry (si), perhaps even anxiety, insomnia etc. Formula's such as Gui Pi Tang, Gan Mai Da Zao Tang, Bupleurum and DB, can all be helpfull depending on the rest of the pulse picture etc. Of course I'm using acupuncture to calm the mind adn ease the nervous system. In this regard I often find the "Calm the Nervous System" protocol helpful that I published in Clinical Practice helpful. It's derived from Dr. Shen's 4 system theory and works quite well. If you have the text, take a look.