I firmly believe that if you limit yourself to only 3-4 movements as your "screen"; you are missing out on valuable feedback that can help develop a more efficient training program.
Combined with effective screening and coaching, these drills will help you and your clients to build a STRONG ATHLETIC LOW BACK! BONUS PRODUCT #2 Every exercise is an assessment.
These tried and true drills have helped me devise exercise programs simply based off the feedback I am able to acquire.