I have one of these.
I installed it to replace the original forward looking sonar on Elyse.
It's not very good.
I think there's a previous discussion on the forum about it.
It only works in absolutely flat water at low boat speed.
Any minor pitching of the boat throws the display out to the point where it is useless.
It really needs to have a motion sensor to compensate for boat movement.
I believe the Garmin Panoptix system has that, but it's a lot more expensive.