ski boots are meant for skiing, not jibbing.
if your shredding in gaper boots, expect your legs to hurt everywhere. shins, calves, heels, toes....
shin bang is a result of overextending the flex of the boot. and if you take apart a ski boot you'll see that all motion is restricted, even FTs.
if you cant ski hard enough to experience real shin bang, PLEASE, SHUT THE FUCK UP.