Even fishing at places like wakanui beach which has to be one of the worst places for dogfish I never once got one on crab. Had them on all other baits including various shellfish and raw/cooked prawns. Paua should work for moki as well?
have caught a few doggys on shellfish eg mussel tuatua etc but not nearly as many as have caught on fish bait like bonito pillie etc. Dogfish are less likely to take these and crabs etc but they will still take them just maybe not as fast