“We had numerous FFS systems and could find and see fish… they just wouldn’t bite.”
^^^This could be a clue to your problem.
Don’t get me wrong. I’m a big fan of FFS – just not on the ice. My experience is the same as yours when using FFS. The fish sense the signal and when doing so it suppresses the bite. Not totally, but a lot. Do as B-Man suggests and your results should improve quite a bit.
I probably had my Livescope in the water less than 2% of the time. I used it to find weed edges and drop offs but then went to the Vex for jigging.