For a long time, I have touted the Triangle Bugs' effectiveness as a topwater panfish fly. Over the years, I have caught a variety of fish species on this little bug while fishing for panfish. This list included many largemouth bass, including one six-pound fish that sipped that tiny size eight fly from the surface like a trout taking a mayfly. So it was a logical decision to tie these bugs a little larger and target bass with them.