A Possible GA Theory:
From the very beginning, I've always thought Casey killed Caylee. I tend to think it was accidently with chloroform & duct tape, to keep her sedated & quiet in the trunk, while Casey partied.
I don't think June 16th was the first time she did this. A couple years ago, another poster had posted that Caylee's thinning hair/bald spots at her temples, shown in the last video of Caylee when singing "You Are My Sunshine"... questioned whether they could be from duct tape used previously.
Anyway.... When Casey realized that Caylee was dead, she returned to the A's house, after CA had left for work. She realized George would be sleeping late, after working the eve shift. Casey knew that GA & Caylee usually had late breakfasts together while Casey slept in. She wanted GA to take the blame for neglecting Caylee.... making him think that Caylee had drowned while he was asleep.
So Casey put Caylee in the pool and got into her own bed.... and waited for GA to wake up and find Caylee in the pool.
I think maybe Casey & George, after he found Caylee in the pool & woke up Casey, blamed each other, but then eventually agreed on a plan & to not tell Cindy or anyone else what had happened.
They agreed to Casey staying away & lying to Cindy (about being away with Caylee & then the kidnapping). One or both duct taped Caylee, wrapped her in the plastic bags, & hid Caylee in an area so close to the A's house.
But Casey wanted Caylee to be found & told Lee to look in an area where they were familiar with and/or that they knew. I think she wanted to have her found very soon.
It bothers me that GA didn't call the police when he knew the car smelled like a dead body had been in it. And it just seems like he stayed a little too much in the background from them on.
I think maybe both GA & ICA had agreed to not tell anyone what happened, but deep down wanted the other to be blamed for neglecting Caylee.
This is my theory only for today and will probably change tomorrow.