I did not get into the troll battles too much as before the update I considered them close to useless. The drop level was next to nothing and those battle no longer gave me Mojo or exp. Now the drop rate is better and they cut out the exp and mojo. I normally don't spend money on the game so I depend on winning contests to get extra kobans. That impact is lessened now that completing daily missions get you 25 koubans, but its still out there. I win or place in the top four when the contests are A pervert mind in a sane body, A symbiotic hare, or All shall fear your skills!. Your method would do better in Eternal rivalry and They are only stairs for your glory.