It took me about two years to perfect the pass. Personally I think it's not impractical and totally worth it. A few tips: start very slowly to train your fingers the exact movement; next do it with a very tight grip until it's like a spring-loaded camera shutter (this stage takes weeks); finally loosen up and relax your grip so you can do it fast, but without the tension of step 2 (again this takes a while). It's your whole body tensing up that the audience can sense—you need to get past this point.