There's so many possibilities to make this; fishing, sun rising/setting verses the moon opposite, the boat in the water with the boat going up and down, a caterpillar where the body moves up and down to show emphasizes of moving forward. These are just a few ideas that I debriefed on and I took out the caterpillar idea for the decision matrix to make it three options to look between.
My Cam I created is below along with the sketch, because I don't know what a polar grid is being out that day.
Present Solution
As I created this automata I learned many things such as making sure my placement of the joints and minimums and maximums of them were right. As I go through this it was a detail I had to fix frequently but I got it to work in the end. The motion is a repetitive action that keeps doing the same thing as long as you turn it the same way, although on a computer it's a little glitchy so it changes. Now I did design my cam from scratch starting with the motion graph to be able to see what kind of motion I wanted to produce before designing it fully. It was just repetitive bumps almost like going over a very rigid road. Although I didn't end up using it for my design, because I wanted the motion the specific motion that I used to get a jumping motion, but if I had the right design I would have used it. In fusion I learned many new features just trying to navigate the way to make what resembles a fish by using anything from curves to arcs to making triangles, but the main thing I learned is the joining motions to this automata. It was cool/frustrating to get it to line up exactly right to we could get that specific motion you wanted when you spin the handle.
Hand-made Automata
Now this automata is what I envisioned it to look like and the detail I wanted to bring into my creation. Now it is hard to create this in fusion so this is why I did this.