It's because the hand by your ear thing is for normal hook bowlers. A glove won't help you with that. What you describe you do with your arm is why you have a left to right hook.
Most people would say to switch over to a normal hook, since you'll probably be able to progress further than with your back-up ball (what we call that).
If you wanna be a serious bowler, get a local coach to help you out.
Hope that helps.
EDIT: By the way, what do you mean by "decent" scores?
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My name is not Andy. No, seriously. For real. I'm not just saying that to make you think I'm lying and my name is Andy, cause it really isn't.
Seriously. o_O
Edited on 8/15/2004 0:52 AM