I see that she didn't realize she was supposed to use the boogie boards to go gown that roller slide...

...Ah, so this was why Youmu-san said that deathflag-ish line in the last panel...

The survey's board of it all:

What do you do with kickboards?
• Use them normally
• Throw them like Frisbees
• Ride a stack of several
• Release them underwater like torpedoes
• Smack them against my chin and self-destruct

Reader-added tags include "Merciless pursuit", "The back tells it all" and "No 'Walk noisily on top of them'".