Wow, have I got the perfect float for you to use!!!! I will snap a picture of it in a couple of hours and post it. In the mean time here is a photo from the internet. It resembles a little inflatable boat, but is only a meter wide and about a meter and a half long.
It's perfect in case someone wants to rest for a few minutes because it is like a lounge chair to lay in, and best of all it has numerous pockets for things like drinks and keys.
P.S. It is called the Sevylor Reef Explorer, can be pulled by a boat but only at very slow speeds, and has a window for viewing down to the bottom!
