So after some extensive testing to see just how many ways you can cheat at sumo wrestling, I have come to the conclusion that the current most popular way is indeed the best - i.e. luring Huang outside of his house with food onto mines or bear traps, or vomiting on his standing place while he's busy eating.
However, I was determined to find some way to rig the arena, and it was made very clear that the devs had worked very hard to make sure people like me couldn't do just that.
Firstly, items left in the arena are teleported onto the staircase in Huang's house when you leave, so you can't leave banana peels and broken bottles in there.
Secondly, the sumo room belongs to New Attnam, so damaging it in any way gets the town mad.
So that left only one option - spilling liquids on the floor. Puddles of stuff don't get teleported upstairs and take a while to wear away, so it was the only way to rig the arena left at my disposal. Unfortunately, that means breaking bottles in a room full of glass walls that alert the populace if damaged.
Wands of striking/fireballs were out of the question, since their range is too large to break the bottles without damaging the walls. Kicking worked - but breaking a bottle of acid against the wall would obviously melt it and piss off the locals. Same deal with throwing.
So I came to the conclusion that the only way it was going to happen was by throwing a bottle against Kenny and hoping it broke, which was far too inconsistent and dangerous. As it turned out, vomiting on the tiles Huang appears on was the easiest idea, and wasn't really anything new.
Another idea I had was to drag the corpses of some carnivorous plants or magical mushrooms downstairs and resurrect them, then go upstairs and challenge Huang.
I was pretty convinced this would work... until the carnivorous plants somehow upped roots and followed me upstairs. The gas left by magical mushrooms will stay behind, but won't be of much practical use. From CVS onward you could potentially leave a mustard gas cloud there but IMO there are much better ways to abuse that gas grenade.
Anyway, another fun thing you can do is also teleport yourself outside the arena and leave acid or mustard gas everywhere to kill off the crowd.
System would indicate in graphic if person is mounted on horse or not.
Same system also show if person mounted on boar, elephant, polar bear etc.
Or if person mounted on ass.
Ivan find mounting on ass funny.