Show them any card you want.It should not matter. If you are asked to assist/accompany someone who is not your buddy just say that you would like to but you paid to dive like everyone else on the boat and its not your problem if someone in the group who is not your buddy needs a guide of any type..Very often it is someone who should not be certified to dive in the first place and screws up kicking sand,scaring away marine life,etc.. If they insist on your assistance you insist on being paid and not having to pay for the trip. I have been asked this a few times and I tell them I have to be paid to dive with an unknown person, oh and my rate $75. per dive and that I expect my trip to be free, and my wife (usual buddy) gets a comp, plus I get a share of the tips.. That should end the discussion immediately and if it does not I get paid.
---------- Post added April 14th, 2013 at 08:44 PM ----------
Same answer as mine Jim ! Except you should get paid AND comp on the trip.