See one of Dave's divers on the left preparing the surface of a shaft before placing a new zinc on it. See how the shaft shines? Dave's Dive Services has found both props and shafts damaged by improper installation of zincs. Our divers are trained in the proper preparation of metal surfaces and installation of zincs to ensure that they have good anode-to-metal contact.
Amateur and untrained divers often forget to swim forward to check for thrusters and thruster zincs when they are inspecting a boat. This won't happen with a Dave's diver.