Re: Cheap Trem Stopper
I take it you haven't tried this yourself? If so, please check in when you do.
That being said, I feel your theory is sound enough to warrant experimentation especially considering the price. I wouldn't be worried about the strength of the bracket as much as the screw's ability to hold the bracket well enough to prevent it from slipping. I'm sure there's something that could be done to deal with that though.
Regardless, kudos for thinking of that.