In an excercise in complete idiocy, I was looking for legal loopholes to consume alcohol on a single person platform while fishing on a lake without the threat of a boating DUI.
The CA DMV says an exemption for the definition of a 'Vessel' (I cannot be piloting a vessel while intoxicated,) is a seaplane.
The regulations for homebuilt ultralight aircraft are found in 14 CFR Part 103. Complying with that sounds like a walk in the park. There are many kits made for this sort of thing, Ultralight Seaplanes are fairly common in the personal aircraft world.
I'm just trying to get out on the water, knock back some beers and fucking fish. Obviously I wouldn't operate this 'ultralight' while shitfaced, it's just anchored. It would be towed to lakes like any other boat launch. Basically a floatplane that is anchored indefinitely. It will never be intended to be "piloted" while I am intoxicated, it will just be floating out there.
Would that situation exempt me from CA dui laws on the water for my experimental ultralight seaplane?