The agile Zerek Ruby Crank possesses an extremely high buoyancy rate. Its tight wiggling action imitates that of small baitfish feeding on algae growth on understructures.
The larger bib of the deep diving model (LRCL) is most appropriate for heavily snagged bottom. When colliding with structures, its large bib and buoyancy bounces itself off the obstructions quickly, emulating a struggling baitfish and deeming it virtually snag resistant.