Yep - I have rode the railroad several times since trying to get it again, and have failed miserably!
Sounds about like my quest to catch the trains from the Peoplemover. I've seen photos that I like, but the closest I've ever gotten is catching the train far off in the distance one time.
Another river view photo. The water was very still on this morning. Reflective Morning at Big Thunder by Scott Thomas, on Flickr
That scene again from the train - a little different angle, and to make it more difficult, I manually focused using an old vintage lens:
It's laundry day. Everything's ten pounds lighter after washing out all of that prairie dust. Laundry Day