I am using the Mega Live like an enhanced SI transducer when fishing for Stripers. I have it in Down Mode perpendicular to the boat and adjust the Down Mode depth to around 100 feet. That gives me about 70 feet of coverage on each side of the boat... The deeper you set it, the more range you have on each side.
The cool part is that I not only can see exactly where the fish are on each side, along with the depth, but I can then touch the Apex screen where the fish are and select "Go To Cursor " and my Ulterra Quest will take me to that exact spot and SpotLock. I then, adjust the depth to about 5 feet deeper than the actual bottom depth, start my Thumper, watch the fish gather under the boat, and start Jigging.
I have condensed (sped up) a 16 minute video of this process and catching 6 fish into a 2 minute video. It's really cool to see the fish movements sped up. At one point two different schools come together from opposite directions. The fish were a combination of Stripers, Hybrids, and native Yellow Bass. The jig doesn't always show up well on this sped up version but it did show up well at real time.
My Apex 19 screen is the left half of the video and my Apex 13 is the right half of the video... in sync with one another.