The ideas that didn't make it went from a full blown endless pool or swim-spa, to a current generator (Exerswim), going through a trolling motor installed in a box that would redirect the flow of water towards me. The idea of having a finger chopped off kinda took that one off the table... only after much consideration, I must say.
The desired attributes of the system were:
- It had to mimic actual swimming, and
- The pool had to be small to not take the whole backyard. (This was my wife's request)
I believe that we obtained the three with our swim tether system.
So, I started out with the simplest possible idea and it seems to work. I drove a 3/4" galvanized steel EMT conduit in the ground. Then, I drilled a hole on the top and attached a "climbing" hook from the dollar store. To it, I attached two old bike inner tubes (27" wheels). I tied a not at the end and attached another hook. This hook attaches to an old belt that goes around my waist and voilà.
So, how does it work? Very well, I have been able to swim for several hours now (not at a time). It does feel like swimming, except for the breathing. You definitely need a snorkel because of the lack of a bow wave. All in all, it fits my needs for fitness and convenience.
Here is a little video of me swimming: (don't judge the technique)
Happy building... and swimming :)