Event 50, Level 2 (Day 2) of Penny's Pursuit (Week 63) on the highest difficulty, Extra Hot (3 Chilies). Free to Play (F2P) strategy using only free plants to complete only the Level Objective, since it seems the Bonus Objective is impossible to complete. The lowest remaining I could get was 8 surfboards; interestingly, this is 1 more than what I was able to achieve the last time this level was used.
I do not use: Power Ups, more than 1 Perk, Coins, extra Plant Food, or boosted or paid/money plants beyond what the level supplies.
Note: This level seems identical to Level 5 from Event 17 (Week 24): https://youtu.be/wcTpDATOGpk
Bonus Objectives completed: 0 of 1
Bonus Objectives: Destroy 30 Surfboards
Perk: Sun Bean Zombies, LV 1
Plants vs. Zombies 2: It's About Time Statistics For TheMaruMari
TheMaruMari presently has 379,221 views for Plants vs. Zombies 2: It's About Time across 1,805 videos, with the game making up over 4 days of published video on his channel. This is 49.84% of the total watchable video for Plants vs. Zombies 2: It's About Time on TheMaruMari's YouTube channel.