Art, sorry for my part in the thread hijack. Scrap, glad things worked out ok. As far as answering your question ,the fact that you stated that the day he smoked, he acted fine and you felt safe,guess the next question would have to be is MJ legal in your state for medicinal purpose`s. If not, then you shouldn`t be hunting with him cause of the legal ramifications having an illegal narcotic and guns. When I talked to him,I`d advise him of the legal risk he`s putting everyone in(including guide) and if he continued, you would say something to the guide as he probably has the most to loose. If its legal in your state, I`d treat it as any other LEGAL narcotic. FWIW, I wouldn`t hunt with anyone thats visibly impaired whether what they were digesting was legal or not.