Hektore

Not that this couldn't work (& quite effectively), but i'm not so sure it's good advice for a beginner. I've seen seasoned climbers with more than a decade on rock have to take weeks off for overdoing it on a single finger. It's so very, very easy to go overkill on one of those tiny tendons, single fingers were never meant to work individually to assist in moving the entire weight of your body. Also you have to make sure you keep your fingers balanced, all of them, even the little guy on the end even though you would never actually use just him, - not never, but not often.

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The advantage law is the best law in rugby, because it lets you ignore all the others for the good of the game.