quote:
but aren't the hands a key component in bat speed?
As Sultan alluded to, as long as they remain close to the body.
30 years ago; World class behemoth Slow Pitch softball hitters would be called "rotational" by just about anybody. While, with baseball hitters, who had to deal with a pitches changing speeds and moving across multiple planes, they might be described as using a more linear approach to the ball. But in that contrasting example, so too was Republican and Democratic political platforms easily defined. With everyone jockeying to get elected, or to sell lessons, they have pirated desirable aspects of both styles and added confusing linguistics to the point that no one can agree on what they see or describe it similarly. I remember when traditional martial arts styles were; traditional. Now, the styles and approaches are blurred. At the MMA level they've cross trained to incorporate everything. Hitting approaches now are often blended. I always felt that hitting a baseball required both forces.
I know this. I spent a lot of time money and effort to incorporate more "rotation" in my son's baseball swing because I felt he was going to need to be able to drive the baseball to be recruited to College. And at the time (BESR bats), college baseball was an offense oriented game. It worked, he did mash in H.S. (2nd best HR season ever at his school) and he was recruited.
But, BBCOR standards hit his College Freshman year. The bats reaked big time, the fields got way bigger, and the resulting near 50% decrease in power (HR's, doubles and RBI's) across College baseball changed recruiting at his College, and from what I read, many others.
His team for the past two years has gotten, smaller, faster, and chock full of left handed slap style JUCO transfers. Offense now is; hit the ball in the middle, on the ground, and hope for an error or beat it out. Then, sacrifice them over (rarely ever see hit and run but do sometimes) and look to score a run. Then let pitching an defense hold. Kind of boring to watch at times. The pro approach differs IMO.
So, his school now; definitely favors what many would say is a linear hitting approach. And, it is very obviously taught and promoted by the Hitting coach.
However, I'm with florida and Sultan, that's not the pro approach nor one I would want someone teaching if it's a valid literal linear mechanics.