I am a new fly fisherman and I use the thumb up grip. Mainly because that is how I was taught. I just found this thread very reminiscent of a recurring thread on the other forum I frequent. It is a radio controlled helicopter forum and there are often threads comparing the virtues of the "thumbs on the sticks" vs the " pinch grip." I think in both cases the answer is if your grip is working for you and it is comfortable, that is probably the right grip.
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