I'd love to sit down with you with some cubes if you're ever in Vegas.
Just left Vegas. Might be back in next few months for a week. I'll PM you before my next visit.
(1) Take brand-new cube.
(2) Have someone do 2 random turns & give cube back to you.
(3) Try to figure out the exact 2 turns to fix cube.
(4) Repeat w 3, 4, 5 turns until you get to a challenging point.
-> Might be possible to do yourself by tossing cube in the air between turns (but you know if you're doing 1/4 turns C/CC or 1/2 turns)