You don't footbrake it. Hitting it from idle will flash the converter higher and leave harder.
2007 Focus ZX3 - FSW Stg 2, cams and cossie mani, stock motor, 7.74 @ 93mph (1/8th mile) w/ 1.84 60ft spinning
Built motor on the engine stand!
Shout out to FSWerks and Focus Rising 2012!