I sort of learned how to hook without the "hook in a box". In the fall of 1995, I got my first "high end" ball, which is the Turbo in my avatar. It was an upgrade to a 16 lb ball from a more generic 14 lb urethane with a pancake block. At the same time, my center installed synthetic lanes. I'm not sure whether the ball or the lanes played more of a factor in this, but my average jumped around 20-30 pins that season to be averaging with the top bowlers in high school who were all using resin. My average dropped the first season I used resin until I got used to it.
Keep in mind that until somewhat recently, everyone also thought that the motion of the ball was skid, roll, hook. A ball that is rolling without slipping/sliding (the USBC roll phase) experiences static friction and physically cannot hook unless the static weights are crazy illegal. A ball in the roll phase without sliding/slipping would never gain RPMs. The point of contact of the ball has to be sliding relative to the lane for kinetic friction to cause a change in direction and an increase in RPMs. Imagine rolling any ball on a perfectly level surface such that its direction of motion is perpendicular to the axis around which it rotates; it will not change direction. You mentioned side rotation earlier. If the ball's motion relative to the lane is straight forwards and it has side rotation, it experiences kinetic friction and is not rolling without slipping/sliding no matter how many RPMs the ball has.
This was more about asking what you mean by roll vs. what the USBC means by the roll phase, which was my original question. We have to be careful with observations as they also need to be justified by reasoning that is consistent across all phenomenon.
Current Average - 225