Intuitively, with a fairly loose line and/or a thick diameter with lots of drag through the water, heavy ball (minimal blowback), your line would form essentially a āUā shape and the slider would run around half depth. At the other extreme, if your rod was really, really cranked down with thin line and especially if you run a light ball (lots of blowback), your slider could run all the way down and tangle up (same as would happen if you dropped a slider on a dipsy rod or thumper rod).
Reality is somewhere in between these extremes and depends on several variables as others said above.
In any case, pretty cool to see sliders on the graph. The fact you can see them inside a 30* cone indicates youāre not getting much blowback, right? In my mind the slider snap should always be behind the ball (otherwise it would keep sliding down), plus leader length to get to the lure. Assuming the return comes from the spoon, not the snap and the transducer is level. At 40 ft down (ish) your cone should only cover ~11 ft behind the transducer, so if you had a 5 ft slider lead that would mean your cannonball at 60 ft (ish) is pulling 6 ft or likely less behind the transducer ā pretty much straight up and down. Sound right?
I was of the impression that wider cone angles are normally needed to see the cannonballs, let alone a slider thatās shallower and further back. And then at the outer limits of a wider cone you get into more significant differences between true depth and "depth" on the graph.