3.2 Direct attachment
Another common practice is to thread a piece of line through the hole at the end of the pinger and knot it -- the body end of the pinger can then spin freely for battery change. The attachment line is then woven into the lay of the rope of the float line -- it doesn't take much as there isn't a lot of tension on it. In this sort of rig the pinger is free to flop around too much for some people's handling techniques. In such a case, duct-tape the body of the pinger to the float line, taking care to leave the screw area free for battery changes.