What document must you hold to guide in Maine covering various activities?

To guide in Maine across various activities such as fishing, hunting, and canoeing, you must hold a Registered Maine Guide License. This license is specifically designed for individuals who wish to provide guiding services in the state, covering a broad range of outdoor activities. The process to obtain this license includes demonstrating knowledge of the local environment, safe practices, and the skills necessary to lead others in outdoor adventures. Additionally, a Registered Maine Guide License ensures that the guide adheres to the state's regulations and safety standards, which is crucial for protecting both the clientele and the natural resources of Maine.

The other choices do not fulfill the specific requirements for guiding in Maine. The Master Maine Guide License is more specialized and typically required for those who guide in complex or higher-risk activities, such as whitewater canoeing or guiding for moose hunts, which is more advanced than what is required for general guiding. A Recreational License is not a recognized guide certification in Maine. The USCG Captain's License pertains to operating a vessel for commercial purposes and doesn’t cover guiding services within the state’s terrestrial or freshwater environments. Thus, the Registered Maine Guide License is the appropriate and official credential needed for various guiding activities in Maine.