An improved fishing weight or “bottom bouncer” wherein a flexible wire support arm includes an offset bent region that cooperates with an exposed cavity and internal depression at a weighted ballast piece threaded onto the arm. Reciprocating movement of a latch piece mounted to the arm prevents or permits the arm to flex in the ballast piece to attach and detach the bent region from the depression. The support arm also provides a line attachment bend having defined shoulders that maintain a preferred alignment of the sinker to a supporting fishing line. An alternative, single arm bottom bouncer sinker is also disclosed.