If your like me you have a few crank baits. Ok more than a few...

I try to keep them divided into seperate boxes, Topwater, Shallow (1 to 6 ft), Mid (7 to 12 ft) and Deep ( >12 ft). This works great except the various baits may have slightly different depth ranges, or when you have crank baits that have been modified and are tuned for specific depths.

I like to take a red Ultra-Sharpie and write the depth range on the belly of the bait. If the depth is specific to a line size I write that also. The red Sharpie writing cant be seen below about 4 ft and it seems to last almost forever.

This saves a lot of time on the water since I dont have to sit there scratching my head trying to remember the depth range or try and figure it out from the lip.