I never owned a Cat Trax but I'm guessing it still takes some effort, solo, to get it centered on the axle of the Trax but your probably golden after that.
Alternatively, I built some ladder like, sliders from lumber and PVC tubes for the less slippery section of my shore as I didn't want to mess with a Cat Trax for such a short distance. They work quiet nicely. I built two sets so you walk back and get the first set and move it to the front, as required. My Wave slides like it's on ice when it's fully on them.
We built a makeshift cart for a dingy in my youth out of front lawn tractor wheels. The small tires worked OK because our twice a year trip was actually 95% paved street through our town to the shore launch.
One year, on a launch day with almost no wind, we had a good laugh. Once we got past the last last overhead lines, we put the mast and sail up and ran it down the final street to the launch sight with one guy in it shouting like a pirate, just to see the reactions on peoples faces.
Sorry for the digression. I hadn't thought about that day in many years.