Abstract: A device for automatically setting a hook in a fish uses a simple post to which the major components are assembled, which post has a pointed bottom for insertion into ice or snow, for ice fishing in the winter, or to which a appropriate clamp may be attached so that the post can be connected to other supports such as a pier or the gunwale of a boat for fishing during the other seasons. The device incorporates a signal flag and it also incorporates a spring mechanism for avoiding activation if a fish only makes a passing attempt at taking the bait, rather than a full strike. This mechanism takes the form of a lever and a first spring-loaded rod attached to a recoil mechanism. If the rod is caused to move with sufficient force it will actuate the recoil mechanism which, in turn, moves the lever and releases a second spring-loaded rod, effectively setting the hook in the fish's mouth. The recoil mechanism is adjustable so that its sensitivity can be set in accordance with the species of fish being sought.