Abstract: A basketball shooting training device, of both direct and an indirect training aid nature and benefit; i.e., it is direct in the sense that practice with it is practice for accuracy while being forced to shoot with a recommended shooting technique, and indirect in the sense that practice with it helps, and in effect practically forces, the development of that recommended shooting technique itself, thereby assuring the avoidance or breaking of a tendency or habit of using undesirable force from a one-hand shooter's other hand or from of that other hand's thumb, and thus assuring better and more consistent one-hand shooting.The device is a sort of harness-like apparatus, having a special control member which provides a rather rigid even though yieldable restriction to the user's "other" or guide hand or its guide thumb and to its or their use during the shot. The control member is a tension member, yieldable in form, and of a moderately stiff yield character of about 1.