if you are going to be using jets or tru trips the lures behind those will be spoons or harnesses.You don't want to be pulling a crankbait behind either a jet or tru trip.You will not be able to find any chart on how deep your crank is running if pulled behind another planer mechanism like a jet or tru trip.An exception is you can run a crank with an extremely small bill that really doesn't dive behind a dipsy or tru trip.Majority of those charters using tru trips using big boards.