If you are using the trainer and have discovered that his health bar is held to the same infinite standard that yours is with option 1 on, and are having a little difficulty defeating him without that option, I have for you, an alternative.
Infinite Force Fury Mode
Seems that you're invincible while Furious.
So turn on Fury mode and option 3 and proceed to dodge his mighty hand blows (there's a red circle on the ground where he's going to hit). When he slams his fist down and leaves it for a couple of seconds is your opportunity to blast it with Lightning. This will start a QTE (quick time event) that only requires that you pound the heck out of the Force Push key.
After pinning both hands this way proceed to blast that ugly mug of his with lightning until you see his neck chain tell you to use Force Grip on it. This will spawn another QTE that results you slamming his big ugly head on the arena floor. Quite comical, actually. Once his green bar is gone you'll attack his head with another QTE.
After you've given him a bad enough headache you'll move on to the next portion of the fight where you'll need to bring down the arena on him. You'll start on a catwalk with support cables attached to it. You'll need to stand near them and get him to accidentally break them. Don't worry... it's not hard, he's rather ticked off, remember? So dodge his attacks while defeating the storm troopers and blasting his face with the occasional lightning bolt and once all the cables are broken, the stormtroopers have used up all their frequent flyer miles, and he's had enough of you trying to make him look like Palpatine, he'll break some stuff and you'll move to the back of a pylon.
Pylon strategy is simply climb it, and blast his hand. Afterwards you'll repeat the whole catwalk pylon thing again... until you've built a bridge of broken arena parts leading to the Baron's observation deck. Once there our friend the Gorog decides to... well let's skip to the part where he grabs Kota and begins falling what is apparently the 8500 miles to the surface.
At this stage of the fight it's very much like the very first level of the game... dodging stuff while flying towards the Gorog and Kota. Only this time it's actually easier, there are a few large obstacles but mainly it's small rocks that are pretty easy to dodge. I mostly was able to just keep smacking the Dash button until I caught up to them.
When you catch up to them he'll take some swipes at you. Dodge them by moving up or down out of his reach. And once again, blast him with lightning. Then you'll move in close and get the chance to really fry the heck out of his ugly mug before having to retreat a short distance away.
You'll be required to repeat the "dash up to and electrify" sequence a couple of times at which point you'll effectively defeat the Gorog and rescue Kota.
Congratulations! You get to move on to the rest of the game.
--------------------------------------------------------------------------- Unwinding is the mortal coil, that drives the gears to tick and toil, until at last, it rests, unwound, and we lay silent in the ground.
The trick about the freefalling segment is that Kota doesn't heal, so if you take too long he dies.
Also, depending on how you level it, lightning or saber-throw at a distance will work good, but when you're right up in his face it seems that force push does big chunks of damage per hit as opposed to the modest chips it does at range, so when you get to the point where you and the Gorog can meet face-to-face, give him a good old fashioned force backhand.