i think the short of it is what alot of us are saying........
we dont live in the dark ages anymore, times have changed, " technology " equipment is available to us that will help us work burrows more effectively, quicker, give us a clue what is going on underground instead of standing above ground like a lemon waiting how ever long till a ferret appears, not my idea of fun..
imagine waiting above ground for an hour wondering where the ferret was with night fall coming in... little was it known that the ferret was only 1 or 2 feet below... without a locator, how the f*ck would anyone