Remember that a sphere sheds a helical vortex and at the relatively slow speeds of a baseball in water, this may produce some funky results. Granted the lacings will help some compared to a smooth sphere of the same size and density, but I doubt either will fall straight. I know a 100 pound led ball we dropped in a 100 ft deep tank in the 1980's kited off more than 30 feet in a non straight- pseudo helical direction over that limited fall range.