Alright. Here's how to prevent it: (some of this should be common sense)1. Make sure you are wearing socks that come way above the top of your boot, and make sure you pull them up if they start getting bunched up on your shin.2. Eliminate space between your shin and the boot, so all of the different things to accomplish that work. (Booster Straps, Boots that fit, etc...)3. Muscle Strengthening, when you are at school or just sitting anywhere, tap your toes for long periods of time. You will feel a nice burn through your shin. Just keep working on strengthening those muscles, and you can handle a lot more off center landings (backseat, etc...).4. Obvious is obvious and overstated, but landing backseat consistently really will give you shin bang, so if this is your bad habit, you've got to change. Not even tapping toes can strengthen you enough to handle backseats all the time.
Also, a more flexible boot will give your shins more of a break, so if you are in the market for boots consider something with a soft flex. Goodluck fighting the shin bang curse.