1. Stay forward in your boots. Doesnt matter how t-hall rides (low and in the center of your feet), you are supposed to be in a forward position.
2. If you dont have enough cash to get full custom liners for your boots, get custom footbeds. They are amazing.
3. Don't be a pussy. I butter all the time on my PEs and have been skiing for over a decade and have never had shin bang.
4. If you are, in fact, a pussy and came come to terms with this fact, buy soft boots. They are amazingly comfortable, and while they dont allow the same aggressive skiing as real boots, they will reduce shin bang. If you ski mostly park, this may be the best option for you.
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SSK