When i was a kid in Ruskin, Fl on the Little Manattee River my Dad bought a 25 ft cabin boat that needed extensive cleaning and repairs. We dug a ramp from river's edge and hauled it up with a winch using logs as rollers. Took a while, weeks, to finish and launch.
Several nights we heard awful noises coming from the ramp area but living rural chalked it up to critters bickering. Then one morning Dad got up earlier. I've always awakened at first light unless ill. I heard Dad walking past our bedroom to the ramp. Then he laughed, called to Mom. I went too.
There, nestled between the raised boat and side of ramp was rhe biggest gator any of us had seen. Dad marked the dirt even with each end of it just before it backed to the stern of the boat, turned, entered the river and swam for the uninhabited island across from us.
The space between the marks measured 8 ft and Dad said he looked old (tho i don't what that means in an alligator). He came back and snored repeatedly. But now we knew what that racket was and we made jokes about 'Grandpa Gator' waking everyone up with it.