Alligator are not deep thinkers. But after this long I have come to see there are some things you can just predict with them.
The most obvious is territory. Even little things territorial.
When I walked up to the bank this guy quickly jumped and swam off a bit. But it was his spot so he wanted it. Nothing vicious, just was comfortable there.
He did what I have had others do, swam nearby always watching so the minute I was gone… it was his again.