Wii Sports Resort has no destructible barricades or "break barrier" objectives. You may be misremembering a specific sport challenge or confusing it with another game.
Reminder: Wii Sports Resort cannot be modded to add barricades on stock hardware. Homebrew (LetterBomb, BlueBomb) enables cheats/texture mods but not new geometry.
Describe the exact sport, mode, and what the "barricade" looks like — I'll identify the real objective.