Has anyone heard of/accomplished successful training of hand grip stength to be able to palm a basketball (starting from a point of not being able to palm a bball at all)? If so, what was the protocol?
I have average to slightly small hands, but I also know I have crappy grip stength, so I know there is much room for improvement.
assuming your hand is big enough to be able to get in a position where it would have enough grip than absolutely yes.
Finger curls, plate pinches, thick handled lifts, hex head db holds, etc will all help.
check out www.dieselcrew.com for a lot more grip ideas.
With practice your figers will actually lengthen! From years of guitar playing the fingers on my left hand are actually longer than those on my right. I have a friend who is an amazing violinist. She has almost 3/4 inch longer left hand fingers! It is freakish!