Ban the use of anything designed and constructed during WWII for amphibious transport of the public. There's no way you'll ever get enough flotation in there. If someone wants to invest enough to develop a new amphibious vehicle to replace the existing stock, that's fine, but I doubt the market would support such an undertaking. Thus the industry would disappear without any excessive action.
My Dad used them to transport cargo from ship to shore when they were constructing an air base in Thule Greenland. They are for getting stuff ashore in places where there isn’t a harbor.
