Re: length for a leader?
I fish with both a lot and I notice that there is less memory in flouro. It's not enough to make a difference though. I try to always match the fishing conditions that I fish in. If I'm fishing a sink tip, I'm using a 4-6' leader of flourocarbon. If I'm fishing top water, I'm using mono with anywhere from 6-9' of leader depending on the fly size. It's more about your casting stroke and what is going to turn the fly over. I would start with a longer leader at first and you can always cut it down until you feel that it's casting like you want it to.