Yeah, for a while i was trying to work on this, but that was an exercise in frustration, because i couldn't even figure out what the proper angle is supposed to be in the first place, much less replicate it on a constant basis. I did manage to hit that sweet spot every once in a while and even won a challenge that way once, after many, many tries, but it's way too inconsistent for me to bother with it on a regular basis.
The thing about the same people constantly being on top of the drifting leaderboards is true. I'm not hating, it still takes skill to pull it off constantly, but i wish us regular players had more insight into what exactly it takes to pull it off, maybe Rushy could shed some light on it.
I have tried to contact one of those players once to ask for advice (renault74) and he seemed nice enough in his reply, but due to the language barrier i didn't get much out of it and didn't bother asking for a more detailed explanation.
There should be something done about hitting the wall during a drift though. As it is now, it only stops you from gaining more points if your drift continues after a slight collision, but people shouldn't be able to abuse the aforementioned method by going full speed into walls on purpose. I think it should void your score for that corner, even though i benefit from that myself sometimes.