There are some good posts here. I stand with those who would prefer that bowlers
learn to read their ball reaction and adjust accordingly; not just left or right, but speed also.
Bowling at higher levels, simply put, is learning how to
manage friction.
Friction too late is a challenge because the ball cannot get past the "skid" phase soon enough to create optimum entry angle, etc. for that bowler.
Conversely, friction too early creates the "weak" hit because the ball has used too much energy too soon.
Speed is also very individualized. A guy with more side roll can roll it slower with success more effectively than the one with more forward roll. This too is somewhat dependent on lane condition and where each bowler finds adequate friction.
With all the variables in today's game: Lane surfaces, oil patterns, oil volumes, the 500 various balls available, not to mention the 500 different things the bowlers do to the ball (faster speed, slowing it down, more tilt, less tilt, more forward roll, less forward roll which part of the lane they attack, and so on...)
it becomes essential that in order to excel you need to understand (your) ball motion and how to adjust that motion. This doesn't happen overnight, or from a class taken, but usually over many years of experience.Sadly, we live in a world where "knowledge" is at our fingertips, or within relatively few key strokes. However wisdom (applied knowledge) cannot be obtained in seconds or minutes. Whew...