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There is no doubt that some archers use extra draw weight as a substitute for technique (eg a dead loose on a 44lb bow will still fling the arrow down; a 36 lb bow needs an active release). And machismo is a severe problem ("I've cranked my poundage right up", he bragged, "so now all I have to do is added weight training to stop the tremours"). Conversely, a bow that is too weak can feel so easy that technique also goes out of the window (why bother with back muscles when you can draw the string with your little finger?).
The answer is to strike the balance, to find what feels best for the archer. Just because you can draw the weight, doesn't mean that you will be accurate over 150 arrows.