Thanks, Guys-
I guess I should have phrased my question differently;
SHOULD overlining to an 8 wt line on the 6wt TFO actually help me launch those big flies better?
Or, as Krueger mention, do I need to upsize the rod to get the effect I'm looking for?
If I do that, what are the indicators that the rod is
too overlined I should watch out for?
Part of the problem lies in the fact that I don't seem to be able to translate how the rod casts w/out the big flies into how it will behave WITH them tied on.....if that makes any sense at all......
I know the "standby " answer is always "try it!" , But I'd also like to get some feedback on what to look for.
( And yes,,,,,yes I could have built an 8wt in the class I dropped out of, and made this a moot point

)