Bandit Money Making (~$700k per hour) Guide & learnings from 150 loops

I have run the Bandit sisters loop in the Obsidian Fieldlands 150 times (and more in the other areas) and this is what I have found:

I was able to complete 35 loops in an hour (including battling the bandits), so it takes about 1m 42s on average to complete a loop
If you don't encounter any bandits, a loop takes about 1 minute
In the hour I timed myself, I had 14 encounters with the bandits, which meant I received 70 Nuggets = $700k

How To:

Begin from the Heights Camp and fly to inspect each of the 3 locations in order.

Note that while each of the 3 sisters has a general area they will spawn in, they each have 4 different positions they can spawn in within that area.
Head north to check for Coin. She can spawn in these 4 spots (look out for the torches she will be standing near)

Head back up along the path to check for Charm. She can spawn in one of 4 places. The first is up on the hill, and the other 3 are in the alcove, next to the path and next to the rock, respectively.

Finally continue along the path until you reach the Clover spawn area. She will again spawn in one of 4 spots

If you find a Bandit along the loop, battle them for the Nugget rewards.
Once you have completed the loop, head back to Jubilife Village and then return to the Obsidian Fieldlands Heights Camp to start again.
Repeat for $$$
Here's a quick example of the loop I take, starting from the Heights Camp:

Other Learnings:

Sometimes zero bandits will spawn, sometimes multiple (or all 3) can spawn
At least one bandit spawned in 34% of my runs, so we probably have about a one in 3 chance of having at least one spawn
The spawn rates for me were: Coin (12%), Charm (17%) and Clover (10%). No significant differences here though.
This method is best done in the post-game, where they will drop 4 - 5 nuggets each battle (they drop stardust before post-game)
Each sister will begin to CONSISTENTLY drop 5 nuggets once you beat her a certain number of times. I hadn't started counting from the beginning, but it seemed to be after around 10 defeats (per sister)
After these ~10 defeats, their pokemon will go from levels 62-63 to 64-65
Outbreaks in the area have no effect on the bandit's spawns
Weather also seems to have no effect on spawn rates