Endless Pool

My second one-mile swim today in an endless pool http://www.endlesspools.com/ . The pool is like a water treadmill, pushing water at you so that you don't do laps and have to worry about flip-turns, which will never happen at an Ironman. They have one at my gym, Vida Fitness http://www.vidafitness.com/ . I thought today's was really easy...then I finished and realized that I had set the speed 20% slower. Whatever. I just want to finish.