Someone who can't swim on their own should only ever use a coastguard-approved lifejacket or other personal floatation device. because of the risk of users fall

Someone who can't swim on their own should only ever use a coastguard-approved lifejacket or other personal floatation device. because of the risk of users falling off, Float toys like inner tubes, rafts, etc are only safe for swimmers. If the pool is busy, it's probably safter just to prohibit non-pfd, since they can obscure the view of the pool floor. Unapproved floats, especially water wings, run the risk of deflating or placing a non-swimmer in a position where his or her face is underwater. Also, when I was a lifeguard, one of the things that was sometimes hard to get to parents' heads is that "supervising" a non-swimmer does not mean sitting on the side of the pool reading a book--it's being in the water no more than an arm's length of the nonswimmer. Every second is critical in a drowning incident, so having a parent less than a meter away will almost always do a better job rescuing a kid than a lifeguard in preventing an accident