uhmm i never had that kind of problems, but i ve seen people struggle with it.
what i said to them is to watch few professional videos and come back to me.
dont have big examples but if you can, watch Barnes from the front point of view, his eyes are deadly stuck to his mark. Thats because the foot work and the release are stable, so the hand will follow the eyes.
the other problem was "blinkin" between steps, thats something i have had in the past. first thing i asked in a alley was, turn off the air conditioning thats facing the aproach, with the aircon up, its almost innevitable to blink during the approach. What i do on my routine is to have my eyes closed when im standing on the point i want. thats 2 second before the first step.
hope it helped
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I go two-handed, and i hate stupid 10pins! cuz my 12lb spare ball hooks too much!