If I had one problem with the TGU, it would be that it involves no explosive element. Well, the good news is you can add a 1 arm snatch to the beginning and solve that problem. I happen to prefer the DB snatch to the KB snatch, because I like the snatch for 1 explosive effort vs repetitive kb snatching (just my preference). You can also 1 rep from the ground a KB, of course. Try this one out!
My favorite way to train TGU’s
BA training. 
Hey, look, shoes!
Oh. I guess that’s not what I was supposed to notice. :~)
I don’t know what was more impressive, the exercise, or the depth of that V-neck.