Swingin' Sandy Skip
Halfway through Downtown Rooftops, there is a clam that unlocks the Swingin' Sandy challenge. A trail of Texas Swingers leads back to the start of the level. A golden spatula is on top of the building. Pressing the button starts the timer, and Sandy must swing across the Texas Swingers before the time runs out.
Only SpongeBob can activate a trampoline used for reaching the top of the windmill. It takes you more than high enough to reach the Swingin' Sandy spatula, but an invisible wall prevents you from landing.
If you time your jumps, the player can bypass the invisible wall from below, collecting the spatula and skipping the entire challenge.