I can't argue with that, man. I didn't really post this as a counter to your suggestions, more just as a "hey wow, look what else can work?!" sort of thing.
I've seen the video with executionator and uonlywish both playing yeti chomper for laughs. I misremembered for some reason, I thought the team eventually failed.
Cheers!
Finally, found a team that follows this procedure and we nailed crazy level very smoothly.
The only update I can tell is:
1. After bringing down all popsicle, you need BOTH PAIR (the pair of sunflowers and pair of corn or pair of etc) to STICK TOGETHER to clear the disco and regular yeti, and never separated or split since it's very hard to survive alone there.
2. Then all four join together when bringing the imp down (if it's too far, bring the imp closer to King Yeti).
3. If you're corn, release your chuck shot and butter barrage first, clear the incoming zombie next then attack with the basic shot to the head (critical hit make Yeti King frozen! ), you might able to release the 2nd chuck shot before the time expired.
I updated this on top so the top guide is my final recommended to beat the crazy level.
If you've microphone, you communicate this procedure to them, as long they listen and try to follow, I can guarantee you will succeed as well, maybe not at first attempt, but eventually once all of them works together in harmony. I was lucky that meet one random player (nature wave) who basically understand the concept and follow the instruction. We try hard, nailed it smoothly, then tried crazy, nailed it smoothly as well.
Here is the video when beat the crazy Yeti King. I took 3 rounds, I just show the last 2 rounds.
We didn't guide the imp closer to Yeti king on the 2nd round causing the 2nd round attack less efficient. Luckily the 3rd round, the Yeti King is very close so drained almost 1/3 of his life.
https://www.youtube.com/watch?v=jxlw2yNCg-E
I'm doing the bodyguard role and while cleaning the incoming zombie, my meter got full and release my chuck shot (10970 damage !)
