I go over my entire setup at the end of this run here:

I still use this same setup today.

The biggest aspects though are:

• Have an outfit with extra stamina, evader, and heavy lifter weaves.
• Have a good fully-upgraded spike thrower with +12% explosive coils mostly
• Have a good fully-upgraded blast sling with +12% explosive coils mostly
• Have a fast-drawing hunter bow for fast shots (mostly early game)
• Have a bow with ice arrows to kill human enemies fast
• Large Stamina Potions ready

There's more in the video, but those will get you through 95% of all the strats

I was messing around with this a few months ago as well. I never did find a use out of it, and it didn't seem to be too consistent either from my testing, so if there was a use we would need to be prepared for it to take several attempts.

I was testing mainly with the cauldron north with flying the sunwing under the map. It stills takes a few minutes to get over there. Plus the sunwing flies too low. It is possible to get the sunwing to fly above the 'under the map' height barrier but I only know how to do that at Thebes so I can't even make it up to the cauldron. I doubt it would do anything because that cauldron's triggers are pretty strict.

The only other potential use could be with the facility where we find Beta, since that's a few minutes north as well. But for the same reasons, I never could get the sunwing high enough over the height barrier.