I haven't, but it records all of your movements - total distance and the exact path you took.
You can see in the image below how it records your path in addition to the waves. The only unfortunate fact is that it will try to interpret your movements as if you are surfing. To get to the break below I walk around 800m. If I turn on the watch and run some of the way it will record it as waves caught (but you can remove them later).