Have you ever paddle boarded? It takes a fair amount of balance, core strength, and coordination. How many lard barges do you think possess any of those qualities? I'm an expert, because I paddle boarded once in Cancun last month for the first time :P.  I was standing on the first attempt, fell a few times and then got the hang of it. This was in the ocean with waves, I imagine it's much easier on a lake with calm water. Really fun, and a great core workout, highly recommend.