I think this strip is more effect without the lead-in panels, which means our first glimpse of the floating wading pool will be the same as Charlie Brown's. Lucy's final comment also works better in that case; it's unnecessary with the first two panels included.
This is a very funny strip (especially "He pointed his flame thrower right at me!"), but it's a kind of humor that seems out of place in Peanuts, heavily reliant on sight gags. At least it's Charlie Brown who's the silly one here.
That's gotta be a pretty strong wind.