Bigmouths on the fly?

<p>I have been considering getting a fly rod, and after what I saw tonight while fishing in the extreme midwestern heat wave convinced me even more. I saw about 20 bigmouth buffalo at the surface of the water with their top lip out of the water, and they would just open and close their mouth. I&#39;m assuming they&#39;re filter feeding right? Sometimes they will go by some cotton that falls from the cottonwood trees and they willl vaccuum it in as well. I&#39;ve seen this before millions of times, but never really wanted to target them because I&#39;m usually after gar and drum. &nbsp;Would a fly presentation work with what they&#39;re doing? And how would I go about presenting it (if it even were to work)? Note: I have no fly rodding experience, so be specific!<img alt="yes" height="20" src="http://www.roughfish.com/~roughfis/sites/all/modules/ckeditor/ckeditor/plugins/smiley/images/thumbs_up.gif" title="yes" width="20" />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;&nbsp;Thanks! &nbsp;-Brad</p>