I go about it very similar to The Waypoint. Single main/rappel line attached by a Bloodgood hitch and placed to height with a DIY Maverick pole. I recently built a new DIY Maverick pole and have been experimenting with various modified hardware store end fittings to accomplish what the Ape Canyon version does at half the price and a couple feet longer.
My Garda foot loop is DIY per the JRB video from components I ordered from a couple different online stores last summer. It clips on to the attached mainline with a pair of oval non-locking carabiners and a redundant "friendship hitch" of 6mm TRC cord to the secondary bridge to maintain correct spacing from the tree. My ascender hitch is a compact Longhorn Agile that is connected by carabiner to my primary saddle bridge and tended upward to eliminate slack while ascending. I most often use my right foot for the Garda loop and tend the mainline with my left hand, in a pull upward to raise the Garda loop, stand up and slide up the LHA with my right hand. It isn't 'difficult', but requires some reps to be fluid and confident...the essence of muscle memory.
At the top, I remove a Petzl William autolock carabiner from my left size pouch and tie a Munter hitch. Then I remove the Garda loop and carabiner that store in the main compartment of the same pouch. Again tending descent with my left hand via the Munter, I slide the LHA down from above the Munter as a redundant safety and brake. If something were to happen with the Munter or William carabiner, simply removing my right hand from the LHA quickly brings me to a halt. I've also practiced a controlled descent with the LHA as an emergency system.