Vans Inc.'s hapless cheerleaders return-trying to apply their art to skateboarding, surfing and BMX-in a commercial breaking July 15 on MTV and ESPN. The trio ends up soggy, muddy and confused after shaking their pompons for Team Vans athletes. But cheerleader-friendly sports are not for Vans, an alternative footwear and apparel marketer that also is promoting championship competitions for four extreme sports (AA, April 6). McElroy Communications, Newport Beach, Calif., handles Vans' advertising. Copywriter: David Karstadt. Art director: Anne Behnke.