How do you beat the first level of co-operation?

dude how easy could this be. if your talking about the ledge where you have to set the boost. bring one guy to the foot of the wall press down so that he goes into a squat position and the second guy doesnt even have to run. walk him over to stand so that it looks like one over laps the other and press space bar to jump and hold it down he will jump up on his own. then bring the guy on top to the edge of the wall and press down he will look like he is laying down on his stomach with his arms dangling over the edge. swith back to the guy on bottom and press jump. he will jump up grab the guy o tops arms and pull himself up.