Thanks for the responses. Admittedly, I've made the problem a bit impossible, hoping to get some helpful responses. In truth, I have caught a few smallmouths on my fly rod with several different techniques, I'm just dissappointed that my spinning rod seems to outproduce on that particular species by about 5 to 1.

It's refreshing to hear that not everyone says, "just through a surface popper along the bank", which seems to be the conventional wisdom for river smallmouth on a fly rod. I've tried that; the results have not been spectacular. Of the three responses so far, all have been for subsurface flies fished near the bottom; maybe a consensus is forming.