Can anyone here actually do it? There's one guy on youtube that nails it but I haven't seen anyone else come as close. Joe Bonamassa can get close, too. I've been trying for years to get it down. My vibrato has definitely improved a lot since the start but it's not even close yet. I'm determined to get it down. I've got the technique down (moving the wrist as if you're turning a door knob) but it's just getting it up to speed. It's by far the hardest thing I've ever tried to learn. Any tips?