Follow Varians 3-2-1 it makes sense and has backing in SCIENCE or so I'm told.
I'd also like to point out that standing on a set of scales and holding those crimps one armed with 5kg left is a million miles away from hanging them one armed. You're not resisting the twisting from the one armed hang, you're unlikely to be in the correct body position etc. etc.
Dobbin - I think James' goal was to hang the small crimps on the moon fingerboard, 3 fingers open, wearing his weight belt (1 stone in weight). I'm not sure if he ever managed it but he came really close one day up at the board before ripping off violently.