The sweep kick is the best.
Wait.. this is about aikido?

lol.

Well, i usually do a relaxed noob clap or i do some random stuff,crazily clicking all the joints

best move ever (if their afk or a noob or if its uke)
press c extend ankles grabby hands space then space again then contract both hips and contract both knees space then space again and continue with your own thing

JFK : This is the tutorial move -_-

Shovel is effective, but people get pissed. Lift kick is pretty awesome.

EDIT: I totally agree with Tonakai. Isn't shovel doing what it is supposed to? Getting your opponents out of the ring?
If the game allows you to do it, just do it and don't complain.