A gator 20 feet from you now? Are you naked and smoking crack? If so, seek shelter.
Ah, if he's just over 4 feet and a third of that is tail, he ain't so big. There's no doubt he'd scurry away if I tried to get close. I see him a few times a week on the grass trying to warm up in the sun. I'm sure once he gets too big, they'll have him pulled out of there and dropped in some remote lake.
Over in Orlando, Lake Jessup is the dumping ground for Orlando area gators pulled from neighborhoods. That lake is choc full of 'em. There was also a lake on Kennedy Space Center that looked like a dumping ground, one day I counted over 30 in about a 3 acre lake.