I like to fish smallish streams, where I usually have to cast straight upstream, or only a modest angle from there. I'm concerned that, because I like to use slack line casts a lot, the end of the furled section might bop a trout on the head (because the tippet section would be effectively shortened by the slack waves). Since I've always used mono leaders, I'm thinking that the thicker and opaque furled section would be a lot more visible to a fish under these circumstances. I can't stand 30 feet away, and throw a nice quartering cast with a curve; it's upstream, with the fly a little up from the fish. Does a furled leader also give me an advantage here, or should I stick with mono?