I'm not good enough to do it, but I've seen IMs and GMs predict their opponent's move, and pre-move moves that turn their opponent's move into a blunder.
For example they assume their opponent will defend a pawn with rook at a1 to b2... so they play a nonsense move like rook at a8 to a2 and sure enough their opponent has premoved Rb2 so they win a rook.
I realized they were doing this when I saw them premove moves that didn't make sense otherwise... then half the time they were winning pieces with it.
Hey guys! These are my bullet tricks!
Play fast... play the openings you know very well
2.When opp in under 10 secs on clock try to give checks at irregular places
3. Try to confuse him with strange looking moves
4.Attack his king...
5.Make him premove a lot... then check his king
6.If opp over-abuses premoves try to play material winning moves.... for example bg7 bxb2
7.In endgames in time pressure,try to place your rook,knight etc near his..... he will not expect/notice and play some other move and you can win material
These are a few tricks of mine
What's yours?