A support assembly for a signal such as a signal flag or the like, which is structured for multiple uses by the provision of an end piece removably attached in different operative positions to the distal end of a staff having an elongated configuration of variable length. The multiple uses of the support assembly is due to the end piece comprising a tool, preferably in the form of a hook, such that when the end piece/tool is disposed in at least one of the operative orientations, the staff and end piece/tool can be used as a boat hook assembly. When so used, a shaft structured to support the signal flag thereon may be disposed on the interior of the staff, along with the flag furled thereabout. Another of the operative orientations comprises the flag shaft disposed exteriorly of the staff in an exposed position for display of the signal flag thereon.