J.W.
There are many types of pool covers, one looks like a trampoline. No you cannot jump on them. If you walk on them you will get wet, my kids have proved that time and time again. Frankly I think they do it to watch their grandma snap but I can't prove it.
You cannot drown walking across them so they are safe.
Okay just read the they will be sucked into them and drown. First why make that comment when you clearly have no idea what you are talking about? My 23 year old son, full grown adult, walked out on it cause one of his grandma's dogs was on it and she was freaking out and it got on my son's nerves. The cover dipped maybe one foot which got his feet wet, that is all!!! They will not die if the accidentally walk across the cover. These covers are used by safety conscious almost paranoid people because you can walk an elephant across the cover and it will not collapse!