I never saw Hot Tuna, but I did see Jorma in Bloomington, IN around 1982 or so. I never saw any advertisement, but this Jorma-head somehow found out about it, so we drove down from Purdue. It was underneath some establishment, felt like a bingo hall. They had about 100 folding chairs set-up, and Jorma played an acoustic set right in front of us, no amps, no mics IIRC. My memory is hazy, but I remember it being pretty good while Jorma-head was really loving life.