Little Brother isn't a rock

Well we have proven once and for all that Little Brother is not a rock and that anyone, even someone as skinny as he is, is buoyant. He has been convinced that he would sink in the water so he would never go in for fear of sinking. While we were at the lake yesterday we convinced him to try floating. He was very nervous and wouldn't relax which didn't help with the floating. So how did we finally get him to relax enough to float? Pure capitalism. If he floated all on his own he could have a toy which cost up to $5. It was amazing how fast he was able to float after that. We have a contract for more floating including in water over his head well on his way to actually swimming.