I spent a good 45 minutes trying to get all the way to the end of this little ledge, was unable to do it without the game glitching out.
So I uploaded this instead.
If someone can get all the way to the end, I'd like to see it.
Nope, that's what I wanted to grind. It's a mission to manipulate the game into letting me grind the thing cleanly. Hitting the top ledge would have been about 10 seconds of effort and looked super boring.
Sorry about being vague about the location of the spot. It didn't occur to me what I'd done until after I had hit the upload button.