The weights shift toward the tail during the cast, then return to their equilibrium position during the retrieve. The basket helps maintain a more horizontal trim during the descent. The 18 g provides enough weight to cast a 12 cm #3.5 egi.
Over a rocky shelf, keep your retrieves short and allow for a long, controlled pause. The descent rate serves as a guide in calm water; current, streamers, and accessories will alter it. The light effects depend on the finish you choose.