I have a Hook 4X on my sit inside Wilderness Systems Pungo 120 that I really like. For the transducer, I mounted a liquid tight box under the seat that I fill with water every time I use it. The battery is stored in a removable box behind the seat. The screen is clear and can be zoomed nicely. The Down Imaging helps clarify what cover I'm seeing. Here's a picture where you can see the school of fish hanging around baitfish on the screen.
I'm happy with mine and would get another.
Jim