I feel the exact opposite. I have a camera and it's fun to see how they want lure presentation and even the help with hook set but there are so many more benefits to a fish finder it's not even funny. Main two things would be find fish quickly and being able to fish the entire water column. Good thing is, you can have both a camera and finder.53' angle = width of beam equal to depth. My boat finder has 53' beam. For ice fishing, I use both a finder and a underwater camera... and overall I find the camera 100x more useful than a finder.
How did your Humminbird work for you this year? I'm thinking of getting one.. I like the versatility of the color sonar units and ended up buying a Humminbird Helix 5. It's awesome on the ice and I plan to use it on my pontoon during soft water season.