Yes, they are tame, and of course some are huge. Last year I poked one with the tip of a shaft in a little 50" gun just to see if I could do it.
Of course they can move very fast if they want to. About four years ago I dropped down right on top of one at about 25 feet. It moved off, but I just hung there and waited, and it came back and stopped right in front of me. I got this wild idea to see if I could touch it, so I extended my hand and tried to inch forward. I think I got within about a foot when it just exploded out of sight, and I almost had a heart attack. They make a very loud boom, I suppose from the cavitation of their tail, when they spook, and it can be startling when you are in murky water and don't even see the fish before it makes that big boom.
I'm not sure how far north their range extends, but they are sure found all along the coast and out at the islands, including up at the northern channel islands. A coastal kelp bed about 6 miles from my harbor often hold a bunch of them.
The weird thing is that its legal to shoot or catch one in Mexico, and then land it in a US port. So you could run the dozen or so miles down to the Isla Coronados, shoot one, and bring it back to San Diego. As long as you have a Mexican fishing license, the DFG has to let it go. I'm quite certain that people have run out to San Clemente Island, or along the US coast as long as they thought they couldn't be seen from shore, shot one, and then said they got it in Mexico.