"Jersey Barriers" wouldn't hold up to winter's ice. Wakes from wakeboats would push them over anyway--with the wrong side facing out.
Wakeboats' wakes need breaking up. I'd suggest increasing decal fees appropriate to those boats and fund a local industry making concrete tetrapods to keep bays and coves from eroding any further.
In Florida, seawalls themselves eventually shatter due to lightning strikes and concrete/rebar saltwater "spalling".
Most fresh water lakes in Florida are surrounded by dense amounts of sand.
With ready access to ocean surfing within two hours of the center of Florida's peninsula, wake-setter boats are scarce!
Signs of serious wake-setter boat problems include:
--Bare soil on a steep, high shoreline bank
--Recession of the shoreline over a period of time
--Leaning or exposed roots on trees
--Large patches of muddy water near a lakeshore, or unusually muddy streams during periods of high water or following a rainstorm.