Have a look again Julien. Check this video in slow motion so you don't miss any detail: https://www.youtube.com/watch?v=XYZ46bGfZ08
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Sep 11 at 09:36 PM
The rail biting is the opposite of the rail popping like a cork because is too thick. If you put too much pressure in a thin rail it'll give in.
yes, you are exactly right. Too much pressure in the tail of your board on a bottom turn and you will lose it.