Here are the scuba dive boots that are the ONLY ONES Doc will order or wear.

Scuba Dive Boots

He wears these diving as well as prospecting and fishing.  They have a very tough bottom sole and are slip resistant on most rocks. (not all) but they are WONDERFUL boots.  Doc wears a size 11 shoe and with no socks the LARGE is a LITTLE tight on toe room, but comfortable. So use that as your guide.

CLICK THE PICTURE to see them on Amazon.