As much flack as Leonard, Tony, Rob and gang are getting for being there, I'll take a defensive stand and say that they are at least making an attempt. I'm sure if they were to pack up and go back to California, many would be bashing that they didn't find Caylee before they left.
I also try to keep in mind that they were contacted for their help. I'll still keep faith in these guys that there is something they can do to help find Caylee. It just doesn't seem like anyone else has been able to do it yet. I believe that any help would be appreciated if it brings Caylee home... safe and happy preferably, or else to put her to rest.