Even when Pushing .... your lures are still behind you, just maybe not as far as when you're Pulling them. In that regard, the electronics you use are still going to show you what "you" are passing over well before your lures pass over it. That's how it works for me & all I'm using is a Down Image unit.
Now, those that are Spider Rigging may well benefit from any "forward looking" technology, be it wide angle 2d, 360 scanning, or Livescope .... since the lures/bait are actually well in front of the angler & subject to "finding" the snags before they show up on narrow angle 2d, DI, or SI.
The biggest problem I see with Pulling is that with so much length of line out, when you do run across snaggy cover, in order to avoid it you'd have to make a large course correction & hold that course long enough for the lures to fall back into a straight line behind you so that it misses getting into that snaggy cover. So if your lures are say 75ft behind you and your depth finder shows a large tree down or big brushpile ... you'd have to veer off course & hold your new course for >75ft in order to avoid them. So what would you do if during that time you happen to have another piece of snaggy cover show up on the screen ?? If you turn away from it too soon, you run the risk of dragging your baits into the first piece of snaggy cover, and if you turn away too late then your baits are subject to being dragged over the second piece of snaggy cover or into shallow water (or deep water) and out of the depth zone you're trying to keep your baits running in. That's why I prefer Pushing over Pulling ... shorter length of line out makes course corrections quicker, plus less line to reel in when a fish is on (less time your attention is away from your screen &/or other rods). The trade-off may be losing more baits to snags (when using weights to Push), since you can't very easily turn around and go back to retrieve a snagged lure (that may be possible when Pulling w/o weights).