Understanding similarity of throw and swing is very important here.
What do you mean exactly?
Understanding similarity of throw and swing is very important here.
Howard has found it very important to teach throw and swing together, so you can review his apporach in the many posts here.
Slaught/CAndrea/Enquist also stress an "if you can throw, you can hit" approach to teaching the swing, see Rightview info. Epsetin also likens the swing to the pitching motion, but more in terms of the body torque as opposed to arm action aspect.
I base my approach (arm action is king) on the way Hodge describes the arm action of the overhand throw in his BIOMECHANICBASEBALL tape. You may be able to get a copy of this over the net from FFS or Wellphyt among other tech savvy contributors who have access to this content.
While the arms are not primary actors in the HLBB swing (because excessive arm action creates a "long" swing), the arm action sequence in the windup of the overhand throw is the same as for the preparation for the swing. Without a good preparation, a good short quick adjustable HLBB swing is not possible.
This can be best objectively described in my opinion using Hodge's tems and an apporach that describes a universal joint motion sequence of the throwing/back arm action and how this synchs with limb actions in the lower body.
The place I start is teaching overhand throw using Hodge's info with a little Nyman "throwing for dummies" (ebook from defunct setpro.com website) thrown in.
If you azre looking for a comprehensive overhand throw program, look for Ron Wolforth's athletic pitcher/pitching central info.
Bustos and Hitter both promote gripping the bat primarily with the middle two fingers in both hands. The index finger is wrapped loosely around the handle and acts as a guide. It may be easier to see the index finger of the bottom hand sticking up since the pinkie finger of the top hand is making it stick up a little more, but the top hand index finger is not gripping tightly. In fact, if you're gripping too tightly with the index finger you're likely to end up with the handle getting too deep into the palm.