How deep for a shelf?
We are finalizing the design for a pool in the Boston area. We will have a "sun shelf" or "baja shelf" or whatever you want to call it, but we want it primarily as a wading area for my small nephews (one is 3 and the other was just born last week) to play in. What would be a good depth? We are thinking of having it about 12" at the pool edge going to about 18" at the other end. The shelf is about 12' wide and it's about 6' from pool edge to the end of the shelf. The depth change will occur along the 6' axis.
Are we too deep? Not deep enough? Too sharp of a grade?
Thanks for the help.