rich, on my SR3 I use 8wt wf floating. I have 2 main carp rigs that are 8wt.'s and a 7wt that I sometimes use if the fish will be smaller. both my 8's are wf floating. then I usually go with a 9' 4x or 5x leaders. in my flyrod arsenal I have 1-3wt, 1-5wt, 1-7wt, 2-8wt.'s and 1-9wt. that covers just about anything. I may get cocky this year and chase those golden bones w/a 3wt!! I have a 5wt size pflueger trion mid arbor reel with ALOT of backing on it, that ought to prove to be a adventure!! I really like that SR3 alot, the drag is incredible. I was looking at a orvis vortec (VO2) but it is $375 so I think I'll stick to the SR3. I would like to get another while cabelas has them on sale but a little smaller one for smallies.
I find that wf floating covers all the fly fishing I do. even though when carpin I use weighted nymphs and stuff that sinks, I'm sight fishing in skinny water the 9' leader is enough to get down to where I want to be. then I use the floating line as a bite indicator as most of the pick ups are very light.