Well, swimming around and all that ... I have to come up with some innovative way to swim more easily. That is, relax and swim at the same time. Well, I always had this thing about Diana Nyad (the long distance swimmer) and her similarity to the "self-flagellaters" of the Dark Ages. These guys would wear hair shirts and beat themselves with a rod till they bled ... all for the glory of God through the mortification of the body. Well ... I just don't go that route. There is a line in sports (not too well defined) between working out and body mortification.
So here's my gizmo. It works in concert with common swim fins. This is the swimming equivalent of walking ... we just use the legs to paddle around while using a flotation device to keep us up where the air is.
This has a steering mechanism. You put your chin in the chin cup and wherever you look is where you go. What could be simpler? There's a nose guard to protect your face when you nod off or don't look where you're going. It must be soft with a little give so that when you hit concrete, it hits softly.
The exact shape needs to be experimented on to allow good flotation while leaving the arms free to 'stroke or slag' ... whatever.
All you do is get on and ... kick ... lazily.
Oh yeah, maybe a cup holder somewhere ... for a brewski.