Baby Alligators are too small and timid to be around people. They just want to survive and grow large enough to not be on the menu. The big gators, somewhere along the line they have had a human issue and now the best thing is to keep away while still looking tough.
That leaves the teens. Big enough to be ‘pushy’, young enough to be dumb. The prime spots are owned by the big guys, next best is the place of those pesky humans… a trail or sunny open spot.
Every spring / summer a new batch find a nice location and do their best to claim it. Depending where it is, people backup or stand their ground. If you get close, these guys fly through the air into the water. However…some wait until the last minute.