Interesting. 2 votes for the vertical format. I'm not beginning to say that RP.net is the end all, be all of photography. But's it's been noted a time or too that vertical shots tend not to do as well as the landscape format.

Matt: I'm just curious where you've seen the "top of the falls" shot a lot. Again RP.net's not the only place, but on that site, I'm the only one who has any shots from that location, and only 3. Most everybody takes the shot down on the other side of the river.

To answer your question regarding more of the bridge. Some serious tree trimming is called for. There is a narrow opening between trees that allows for the angle in question. And while you can open it up some, the portion of the bridge to the left, is largely blocked by trees.