I was taught to do this years ago and still do this when hole hopping. Dunk the ducer, swing it in a circle. You will see “blips” show up when fish are around but not under the hole. If you do it enough and get used to it, it can be a great tool in showing which direction the fish are moving. Its a heck of alot quicker than me walking back to my livescope and scanning.
I have done that a few times but I worry about damaging the ducer wire by doing that frequently, have you run into issues doing that?