What the heck?

This may be the strangest thing we saw while on vacation in Florida. A shallow canal flowed close to our beach house. A variety of floating devices were used in this area such as; kayaks, canoes, rafts, surf boards, skimmers and paddle boats.   One morning this contraption was spotted. It looked like someone had taken the moving parts of an elliptical machine and put it on floats. The guy was certainly getting his exercise while he enjoyed the water. My camera lens was fogged up from the heat, so this is the best picture I could get.  Now that is the kind of exercise I could get into!