A group of 4 used these in Cuba last year and we had hours of fun in the pool. You do have to be a little careful as they can be thrown some distance I was often hitting Canadians on the back of the head with ours! I guess I dont know my own strength! They do take a litlle bit of getting used to and dont work very well if the water is choppy like in the sea but if you skim them like a flat stone in the pool, they work a treat! Seriously, buy them, you will love them!
I used these down the beach last weakend, and they worked awesome!!!! 1 of my friends skimmed a stone I told him "I could beat that" I through the ball, then had to swim 60 metres, to receice it!!! I advice any1 to get one of these and get down the beach!!!!