I don't know how many of you guys pull tubers behind your boats, but I thought I'd share this story.
A couple of years ago, I was pulling my husband and our young son in a pretty big tube and they were goofing off on it a little bit. Well the nose started going under and took on some water which weighted it down and the rope broke. I realized the rope had broke when they stopped moving and I was still going, but what I didn't realize because it happened SO fast was it had hit our daughter, who was sitting next to me, square in the chest and knocked the wind out of her!
When I asked her if she was OK she couldn't speak and I picked up my husband and son and we laid her down in the boat. Being a typical 9 year old brother he said, "Is she dead?"
Anyway, she ended up catching her breath and when we took off her lifevest she had two huge bruises on her chest and stomach area. I swear it would have blinded her and knocked her teeth out if that rope had hit her face. My husband had to brace his feet on the dash to pull the rope out where it was wedged between the bottom of the windshield and the boat.
Needless to say, we got rid of that huge tube, bought larger ropes, and purchase the thing that absorbs the shock if a rope breaks (can't think of the proper name). If you tube, please consider purchasing one of these items.