xvimbi,
Thanks for the reply. I take it you are with the anti-Hanon brigade then?

But great post, I agree whole heartedly.
However, let me rephrase my question:
I find that having a good range of mobility between fingers 3-4 on my left hand extremely useful. I gained this from playing guitar for many years, so its likely I wont be able to train my right hand using a similar method.
Unfortunately the tendons involved with 3-4 on my right hand make certain trills difficult to perform. Especially ones where 4 is on a black key, and 3 is one white. I feel that if I could lift my 4 with the range of motion and relative easy that I can with my left hand, then things would improve greatly.
As Hanon (who's methods claim to exercise for this very ability) is not useful according to your methods, what would you recommend as an alternative method?
I do understand that the correct hand rotation can alleviate the necessity for such a range of motion. But to have it with one hand and not with the other is extremely frustrating!
I know Bernhard likes this martial arts analogies so how about this:
Imagine you training Karate. Your left leg is well trained and extend far in sideward motion, with little effort and loss of correct body position. However, your right side kick is poor. You can bairly lift it above waste height before the body twists and tilts back. You ask your instructor how to achieve an equal degree of dynamic ability with each leg (as they apear to be equal in static stretches). Yet he tells you it isnt important, as tilting the body far back removes the need for such dynamic training of the abductors and hip flexors.
Now, you know on one hand he is right. But on the other hand, you still long for the superior ability of the left leg! You know it would make life 100 times easier, but you're just not sure how exactly to go about it. Your old teacher gave you the 'Hanon book of Karate' exercises, but other have illustrated major flaws in the system, and you'd prefer to use a more effective method.
xvimbi, this is exactly the boat Im in. I have one hand very strong and flexible from years of training, the other a relative cripple! He needs to get off the couch and do a few laps, but he just dont know where to start (other than the Hanon Gym

).
Ya get ma?

Thanks again
Steve Jones San