We have a 16' x 24' area next to our concrete pool patio that we need to surface. Currently it's just gravel. We had planned to put in concrete, but then we thought that it might be better to lay down a rubber tile/paver product instead, which would be more kid-friendly. I'm getting a little frustrated searching for the right product. Has anyone else done this type of thing? If so, which product did you use? I'm most interested in 2x2 or 3x3 tiles that attach to each other with pins, or the like, rather than adhesive.