Littleriver, I have this book titled "Precision Casting" by Mark Romanack and Steve Holt that provides graphic dive profiles for most of the commercial crankbaits that were available in 2000 when the book was published. The authors tested crankbaits and made underwater observations to plot their dive depth along a 100 ft retrieve course. A couple of things stick out when you look at the 100+ dive profiles they present. All of the crankbaits reached their maximum dive depth beginning 30 ft from the boat and ending 12 ft from the boat. That is a very small window of maximum depth on a 100 ft cast. And the dive curve of all the baits, be they shallow or deep divers, look very similar. There were no baits that dove to their maximum depth noticeably earlier in the retrieve than any other. I'm not saying someone hasn't or can't come up with a crankbait that breaks the rule as to how quickly it dives. Maybe that has happened in the intervening 12 years. But?
Ben - the book includes the 1/2 oz LJ Deep Secret. The deepest it ran was 19 ft with 8lb line on a 100 ft cast. My personal favorite LJ crankbait is the 1/4 oz Baby Hot Lips Express. Very few (if any) 1/4 oz crankbaits can get down to 13.5 ft with 10 lb line.