These Charter Captains have to produce fish for their customers. Boards and leadcore are for the spooky fish. Dipsys for me have been HOT. I have used the planerboards for Walleye for over 20 years. You spook the fish to the sides, and have something waiting for them.
The riggers produce, for those in your face fish that have no fear of lead balls, prop wash, cables, etc.
What I feel about the leadcore on planerboards, and Dipsy presentations is not that much different than the boards for Walleye. Picture this. The boat and riggers pass over some spooky fish. The fish scatter to the sides. What do you have waiting for them?? Dipsy 75-150 ft back. Another Dipsy 100-200 ft back. Leadcore on planerboards 600 ft back. The stealth like presentation of the Dipsys and Planer boards is also there for the undisturbed fish that they happen to pass in front of. So these off the side presentations target the fish they normally would pass over, but also the fish spooked by the rest of your gear. Why these presentations have been outdoing riggers is just that simple. Of course this is just my way of looking at it, and I may be wrong. Let's ask the fish.