Fish Finder use when deep jigging in lakes?

[bulletbob]

I have 2 boats with a garmin color FF on each.. they are older units, a 250 C and a 350C... However they are each 500 watts RMS which should be sufficient power for how I fish even in this day of side scan, ultra definition etc...

My issue is this.. When jigging for lakers, I can see fish,and I can watch my jig no issues there, I can read bait, structure etc, very clearly.

However, most jiggers even 10-15 years ago with older sounding units would actually watch the fish approaching thier jigs, and watch the fish chase and hit the jig as it was racing upward... In real time.. YT is full of videos of guys doing that and some of those vids are pretty old, not using todays ultra high tech sounding gear,,, I CAN see the hits, and I see it clearly, but its all "after the fact"... I don't see the fish hitting the jig as it happens, only after I actually feel the hit... Am I doing something wrong with set up,, perhaps scrolling speed?.... The Garmins are easy to adjust, and I feel I am missing something as guys with less powerful, cheaper, black and white sonars are seeing their fish , lure, and bait in real time, while I see it 10 or more seconds after it happens.. I don't see "chasers", only fish that have chased and I wasn't aware of it at the time... any thoughts on what I might be doing wrong?... bob