Ice Rain 12 Cob Cannons | Plants vs. Zombies | Survival: Endless

Happy 14th anniversary, Plants vs. Zombies!
This setup looked fun, so I wanted to try it. It is actually easier than it looks. The Cobs are way up front, but you only have to worry about the Dancing Zombies. It's okay if the Pole Vaulting Zombies jump over the Cobs.
Solution: Cob 6 ( PP | PP | PP | PP | PP | PP )
Mistake(s): I fired too early in Wave 10, which allowed a Jack and a Dolphin to survive. I quickly killed them with a Cherry Bomb also intended to trigger the spawn of the next wave.