Captain, unpowered boats are required to "display a white light, mounted or handheld, in time to avoid a collision". I would assume this rule would hold true with flotation devices also.
Not uncommon to see flashlights suddenly waving from unpowered boats when fishing past sundown or before sunrise.
Treesparrow not uncommon to see swimmers and tubers using PFBC maintained launch facilities. Likewise, not uncommon for people to exceed speedlimits while driving a car or my favorite, the doorknobs who ignore the "no wake" laws. So the old saying goes; sometimes you get the bear, but sometimes the bear gets you.
The issue remains, flotation devices used as swimming aids are not permitted to be launched or retrieved at PFBC maintained facilities.
Some food for thought; does this include "float tubes"?