[Discussion] Are there any weird "rituals" you insist on doing in the game?
In levels when I've beaten the boss and my cannon is full and all that's left is for my cats to chomp away at the base, I'll try to time my cannon so that the wave hits the base at the point when the health gets to zero.
When I'm treasure grinding and the treasure simply refuses to drop in that one level, I'll play it again but not upgrade wallet. If that doesn't work I'll also not use cannon. And failing that, also not use any high cost cats. (Surely that will somehow increase the chance of the treasure dropping.)