I'd like to see more on that aider - I saw in the youtube comments about it being 1' webbing with weep hose. I'm working out one-sticking and the aider has been my most consistent need for improvement - I'm using a spare versa-lite strap knotted onto my bottom steps so it spreads, but I only have 1 step and want more reach.
I noticed you rappel with just the safe guard - you don't need an autoblock or anything else? I ordered a safe guard this morning after seeing this, because my previous plan (ATC plus autoblock) required more adjustment (slackening the tether to attach the ATC, risk of dropping it, etc) to my tether/rappel line than I was really happy with, also more room for whoops, if it didn't grab tight enough to stop me hands-free to remove my stick on the way down. Thanks for the very clear demo on it.
If you were to slip on loose bark, have a disastrous sneeze, whatever... and drop anything (including your stick), have you got a solution for retrieving it from height? I would think changing out the end of the doyles hoist for some kind of grapple hook would let you climb without your bow hooked, have the freedom to pick up anything else you might drop, then fish your bow up with it at height, and still use it like you do as a retrieval on the way down. Just a thought.
Really nice job.