So I have been fishing Denton Creek a lot (the section that comes from the dam). It is packed with Buffalo, but they seem to have a hard time seeing my fly. I have had some success in the past, but it seems to be quite sporadic. I have tried Zug Bugs, various Carp flies, San Juan Worms, and several other nymphs. I will put the fly right in their face but they don't aggressively attack it as much as Carp seem to do, or even eat it at all. Is it my presentation, fly, or something else? Has anyone else had a problem like this before? They just seem to be completely blind sometimes!