I may or may not be making a mistake, but I'll be honest here, I fight like an idiot. I have some basic tactics, and I'll honestly just share them here.
1. Hit with one leg, and opposite arm. Best way to get the most velocity is to put ALL your joints into it, so if you twist your whole body one way, you can reverse it and re-reverse it time after time, causing huge amounts of damage every reversal.
2. If my elbows or knees aren't doing something important, I limp them. You can get extra power in a kick or punch if your limb can extend a bit, so why not give yourself the opportunity?
3. Spend the first turn completely defensively, and with legs and abs limped. Set hands to grab, pull elbows in, you'll almost definitely make contact with SOMETHING. Then you can use your bent legs to jump, kick, jumpkick, or even drop further, if you can afford it.
4. Spend the first turn setting up an attack, and the second executing it. This one's a bit more risky, but MUCH more favorable if you can make it work. This is the only way I can pull off my Backflip Slam.
5. Learn the physics of Toribash, and use that and the moves your enemy is most likely to use next in order to plan a move to counter it. This is the reason I'm as good as I am. I can see that my opponent will try to use a limb to grab, or to land on, and I know exactly how they'll try to do it. It's much easier to gently slide them out of place, so their turn is wasted, or perhaps even DQs them. Of course, sometimes you will be wrong, and YOUR turn will end up possibly DQing you instead.
6. Break yourself on them, but only favorably. Make sure anything you're still hitting them with is NOT going to break off and drop to the floor. Instead, set your hand to grab before it should break off, make sure your legs are moving upwards, anything to buy you more time. If you know your leg is forfeit, make sure it's going to take forever to get back to the ground.
7. Most importantly, remember to twist. If your chest goes right, your legs go left and your arms go right. That means that when you make your chest go left again, your arms go left, twice as far, and your legs go right, twice as far. I've won matches by simply twisting over and over again, pummeling them until they didn't have enough parts left to avoid DQ.
Anyway, that's my advice. Hope it helps some, although there's nothing in there about standing up.