To reiterate @LFF
The month of May is the peak of alligator mating season, resulting in large alligators moving between water bodies in search of mates.
Mature males are going to be actively moving around during this time of year so you're more likely to see large alligators.
After months of hibernation when more dormant during the chillier winter water, large male alligators may get your attention; they're not the only ones active, smaller female alligators are also busy trying to fill their stomachs and put a layer of fat on.
They’re mostly interested in shore line activity for prey, typically after killing (drowning), the prey is stored along the shore in grassy areas, guarding it until it rots at which time it becomes palatable & digestible for them. Obviously one doesn't want to meander along unfrequented shoreline. They are mostly aggressive during the May mating season; however it has been unseasonably warm and likely on the move already.
Stirred a big one while my daughter was open water skiing some years ago in the Arlington River here in NE FL, fortunately she thought it was a manatee & didn't freak or fall; it was a solid 8-footer though. My other daughter a couple of years later when we were again free-skiing south of Switzerland on the St. John's, while awaiting to start, not one, but 3 gator heads emerged behind her (morning glass), probably just 5-6 feet (generally the distance from the tip of the snout to eyes in inches = length in feet). Fortunately my other daughter was too busy chatting to notice & thus no panic ensued, just put in gear tightened up and told we were "hitting it" Got lucky on her 50% deep water start success at that time. Ignorance is bliss.
They are curious, but alligator attacks on people in open, deep water is exceedingly rare, perhaps with the exception of clear-water springs/rivers like Wakulla, but these are not skiing venues.
Cottonmouths are oviviparous & appear not to have a particular mating season; they’re just pissed off all the time.
Personally I think the Florida environ is more conducive to effective training.