this is the same motor as used in the endless pool, do get the high performance motor though. Current is about 3-4 foot wide and no dead spots. You do have to get used to it though. I have butterflied in it. With the fastlane very easy to install and remove. Energy bills will rise , but not as much as you think.
I guess you could, but it would be a pain in the arse. The piece that drops into the water should be bolted down, but the motor that runs it is pretty heavy ( about 200 -250 lbs with fluid). You would want to hide that behind some bushes and the two hydraulic hoses run into the unit in the water
They had one in a portable plastic pool at the Ralphs expo in 2006. I got to swim in it and I thought it was awesome. It feels pretty much like the normal endless pool, and if I had the $$ I would buy one today.
I don’t have any experience w/the portability aspect, but those guys had gotten it there and planned to bring it back home with them (in a truck?) so it would probably not be too hard to move occasionally. As another poster said, maybe too cumbersome to remove after each workout, but installing / removing it occasionally shouldn’t be too big a deal, provided your particular installation doesn’t involve cement or something.