I learned em on a level round bar.
Basically just told myself to go for it. It wasn't a lot of tries before I was sliding the entire rail. I had feebled it a bunch of times accidentally and on purpose, and then just kinda tried to botch the feeble and it started to work. As to the feeling, Sunday nailed it. Hard to explain, but you know when you are locked.
As for getting to the end of it, I went fast enough to hop a little to avoid BB slaps on the rail after a handful of "figure it out" goes.
"Hey anybody ever make that mistake like right when you wake up in the morning and you believe in yourself?" -Kyle Kinane
"BIKES!" -Tom Segura