What are your thoughts on depth control?

[BearLakeFishGuy]

I've used Dipsey Divers going back to the mid-80's on Lake Michigan. They work as intended but even with the Dipsey releases it still has some drag in the water (like a keel weight). You also need a pretty stout/stiff trolling rod with the dipsey to deal with the resistance of the diver. This is more pronounced the deep you want the diver to go. Therefore, I much prefer using downriggers or lead core. If you google some trolling information sites on line, you can look up the lure type, depth you are targeting, speed, weight of lead core line, etc. and it will tell you how much line (either in feet or number of colors) to let out in order to achieve the depth you want. I think there may be a phone app for that too, but that is more than I care to deal with when fishing. I have used lead core to troll down to 50' at Bear Lake before I bought downriggers.