I just got a new spinning reel and I was about to put line on it, but I figured I'd see what you all do first. 

It's going on my dedicated finesse jig/shakeyhead rod, so I'd obviously want FC somewhere.

I have braid on my dropshot set up with a FC leader, and i was thinking of doing that. 

 

Do you back with braid entirely and use a FC leader,

OR

Do you back with something else, put a large amount of braid and then an FC leader?

I back 50% with cheap mono and then spool up the other 50% with my braid. Since I use #10 it would take a lot to fill the spool using all braid. Tie on leaders as conditions dictate.

I use straight fluoro. No leaders for me. However, I agree with Rip, if you want braid use 50% mono backing then fill the rest with braid and add a leader as needed.

Yep, back with Mono. Saves you a bunch of $. 

Never go with braid straight to the spool unless the spool has holes to put the line through.  The braid has no stretch and will slip on the spool.

 

I use braid with a leader for finesse.  Copoly in stained water and FC in clear.

I back 50% with cheap mono and then spool up the other 50% with my braid. Since I use #10 it would take a lot to fill the spool using all braid. Tie on leaders as conditions dictate.

This ... the only difference is 15 lb braid for me.

I back 50% with cheap mono and then spool up the other 50% with my braid. Since I use #10 it would take a lot to fill the spool using all braid. Tie on leaders as conditions dictate.

 

Excellent advice ! ^^^^