If I’m correct that rod has small eyes close to the reel and that doesn’t help. I have 2 kinds of 6lb braid and also don’t get the distance I need. IMHO you’re giving up a lot of contact adding the float as you suggest. I also use Nanofil in 2 and 4 lb and find that the 4lb cast a 1/16 a very long way. Folks talk of fire line crystal very well but I have yet to try it. Another vote for losing the float.

