What are y'alls thoughts on monofilament vs. Fluorocarbon for vertical jigging? Also, do y'all use a leader or no leader? How much in line sensitivity, if any, is lost using a barrel swivel above the leader?

Mono is fine unless it's super clear water, then use fluro, and leaders are not necessary.

If your after sensitivity, use braid, then a fluro leader
If you use this for awhile then pick up a rod with mono, it will feel like your fishing with a rubber band
Some use a barrel swivel, I don't and haven't seen a need myself

X2 , I couldn't have said it any better , and Todd is right about the sensitivity, after you try it you will change ALL your rods to this set up

i use 30 lb power pro "slick" Hi Vis Yellow braid (8 lb diameter) and love it! the reason for 30 lb is its a bit thicker and keeps the line from cutting into its self on the spool.then a very small swivel and about 12"leader of 12 lb mono...i dont care for fluro as it is too brittle. braid is good for over a year,then you can reverse it and get another year. great stuff.

+1

I use 20 pound Braid in Power Pro Super Slick in High Vis Green.
I use an 8 pound Flourocarbon Leader. Fluorocarbon Sinks. I use that Vanish.
When you tie on a jig wet your line before you close your knot or it will break. It burns easy, so wet it with some saliva.
I do not use a swivel.

Works Great Last long time.

Like anything with fishing it is a personal preference.

Good Luck! Tight Lines.

10lb Power Pro braid for me.

+1

I've switched all my rods to this set up. 20lb Sufix braid and 10lb fluorocarbon leader. I don't think the fluorocarbon leader is necessary in most of our lakes, but I like that it is easier to re-tie if I want to switch jigs.

Everyone will have their own opinion so.... Don`t do this .Experiment with different combo`s for youself then draw your own conclusion what you like and what feel right to you.

+1, I tried this setup the first time I saw it on here. The floro is to brittle for my liking. JMHO. You do need to try different setups. Good luck, and tight lines.

If I am vertical fishing you will find 10lb high vis braid on my rod. Sometimes I use a mono leader and sometimes I do not. Braid will detect bites you will never feel with mono. I can also straighten out a jig hook when I get hung up. I only use fluorocarbon when fishing clear creeks.

try the Berkely cold weather line,. its great!!! strong, has a little stretch, limp, low memory, easy to tie ., thin diameter, cheap price.. I wish I found this line years ago.

10# Stren mono for 20 years now. It's easy to find and strong. Never felt like I missed and fish using mono over braid.

10 lb PowerPro. No leader