I believe there is some sort of regulation regarding guides but not sure what. Pretty sure the Scout base uses the term ranger for the staffer that goes withveach group because of this. I may be corrected.

BTW,Gerald Patterson's A Guide's Tale describes guiding in the BWCAW in a much earlier era, but as I recall what they did is close to what you are looking for. Too bad you can't still take the train to Winton.