Abstract: The line retension device includes a relatively thin plate having means defining an elongated passageway for receiving the line in a friction tight manner. The cross-sectional area of at least a portion of the passageway is complementary shaped and sized relative to the cross-sectional shape and size of the line. In one form of the invention, the passageway extends in a tortuous or non-linear configuration in the unstressed condition of the plate to grip the line frictionally. The plate is adapted to be flexed manually to deform it to a position where the configuration of the passageway is closer to that of a straight line, thereby permitting the line and the plate to be moved relative to one another in a much more facile manner.