I have been using 65 lb. braid for many years now on my side rods (I use the thinner and smoother brands as well - Spiderwire Stealth, Powerpro Superslick), absolutely necessary for me in fishing the areas I do when the current is pushing. No broken mainline on fish, landed and safely released at least 7 over a 100 lb. in the last several years (2 last year). I still have a rod I use to fish a back rod with 80 lb. braid (huge difference). I will switch this to 65 when the 80 needs replacing.
I use either 100, 150, or 300 lb. leaders depending on what I am fishing when on anchor on my side rods. Out back on light setups and jigs I use 60 lb. I also use 60 lb. if I am drifting for lings so that I can break the leader instead of my mainline.
...Rob