Glad to hear that you abandoned the Figure 9s
for suspension. I hope the rope sheath did not become too frayed, because if you try the Gaarda hitch and the frayed sections are within the area around the descending rings you might experience rupture to the sheath.
My advice, in no particular order is:
*convert to whoopies,
*convert to cinch buckles and web straps, or
*grumble under your breath and keep tieing the HH hitch.
Personal history: HH Hitch>>>>whoopies>>>>>>cinch buckles & straps