Paul Howe teaches an Advanced Patrol Officer Combat Tactics Instructor Course:
It was day two that opened some eyes. I began with a demonstration where I tape an IPSC target forward of the drivers door, half exposed. I then began to ricochet bullets into the kill zone of the target off the hood and off the windshield. Jaws dropped. Comments were made that this is where we have been trained to fight from for years.
Crowding cover can have deadly consequences:
I suggest not crowding cover and allowing the take off angle of the bullet to work in your favor. We found that three good steps to the rear gave enough angle to protect you in the kneeling position.