I've purchased in the past super super deep ( to me their deep ) diving crank baits. Big lipped and to much to use with by cranking with a reel. Supposedly desingned to dive 20 to 30 ft. Thats deep to me for a crank bait. Not much experiance on trolling them behind a boat. Only time I've ever trolled was in the gulf of mexico. Have tossed them out behind the boat at 1 mph (manufactures recomendations) and don't feel they are diving to such said depths as I've crossed 8 to 10 ft of water and not felt bottom. Any one have have suggestions on what I'm doing wrong? Thought about carolina rigging them to get them down. Any suggestions besides down riggers?