Yes the title is a little presumptuous.. I've just been working on it a little too long ;-)
7 shots in vertical stitched in Photoshop.
The edges of this were cloned in to maintain the max height and i've curve adjusted dodged, burned, masked and saturated.. as you can probably tell..
At any rate I think this is a bit spesh given the detail in the water and the sky ..
The old guy in the far left is a regular swimmer at the baths who I got to chat with. He said that it was the best morning he'd seen for six months or so.. I kinda agree ;-)