This guy's report about taking lessons from Strickland and Archer is very funny.
"However, it was interesting to discover that you couldn't actually see where Earl's tip hit the cueball — as he always seems to aim dead center but at the very moment the shot is fired, he applie [sic] the english. It baffled me to a point where he let me stick my head between his arm and body to watch it really close up. Yet, after repeating several monster stun shots, even from this angle, it was impossible to figure out where the cue actually hit the cueball. It didn't help much that Earl couldn't really explain this either."
From: https://ccrma.stanford.edu/~peer/pool-earl-archer.html
"However, it was interesting to discover that you couldn't actually see where Earl's tip hit the cueball — as he always seems to aim dead center but at the very moment the shot is fired, he applie [sic] the english. It baffled me to a point where he let me stick my head between his arm and body to watch it really close up. Yet, after repeating several monster stun shots, even from this angle, it was impossible to figure out where the cue actually hit the cueball. It didn't help much that Earl couldn't really explain this either."
From: https://ccrma.stanford.edu/~peer/pool-earl-archer.html