Abstract: A remote controlled fish trolling vessel 10 is described for trolling a fish line remote from a fisherman in response to transmitted radio commands. The vessel 10 has a miniature hull 15 with a depending electrical motor and propeller assembly 42 for propelling the vessel. A rudder 58 is provided that is for turning the vessel. A control means controls the direction and speed of the vessel 10. A fish line attaching arrangement 96 having a first magnet 110 affixed to the fishing line and a second magnet 102 mounted to a housing in which the spacing between the magnets 102 and 110 may be adjusted to adjust the tension required to release the fishing line.