On one hand, it's a harsh punishment - a month ban might do it. But on the other hand, for those of you who know about it, who is going to "risk" it now?
Harsh punishment is a great deterrent, even if it's OTT.
Only question is, to be "fair", they need to ensure all the jibbers know about it.
But then again, jib in the park, or off natural features - trying to show off jibbing slow signs is gay.