I recently caught a 208lb bluefin on the sinker rig. Reel was a Penn Torque 40nld2, filled with 80lb Izorline MC braid, about 450yds, with an 80lb mono topshot. I was almost spooled at the outset of the fight. Biggest fish we boated before this one was about 80lbs, and a lot of guys were fishing 50-60lb sinker rigs. Dangerous.
This year, I caught a few over 100+ BFTs on sinker rigs using Fathom 40nld2 or on a Raptor JX. I back my rigs w/ 80lb braid...as much as I can. Then will run a short top-shot of 80lb mono. My leader is about a foot shorter than my pole, 60-80lb floro.