I have a love/hate relationship when it comes to swimming. While I'm UNDER the water, I swim fairly well. However, I have a VERY difficult time staying on the surface of the water. I sink like a rock, to the point where I can literally stand on the bottom of the pool and walk about with absolutely no issue (think Link wearing the Iron Boots in the Water Temple from Ocarina of Time). I was wondering if I could get some tips on floating?