In my limited experience with them (really the past 3 weeks or so)i have managed a few decent fluke and at night it was all sand sharks...It seems easier at low tide or outgoing tide to find the crabs..And there seems to be more crabs around to grab in the areas in fishing at this time of the tide..Also im only using the bigger ones and putting 2 or 3 on the hook seems to get better results then just 1