Nation's No. 1 Center Demetrius Hunter Says Cowboys Are at the Top of His Recruitment

Year in and year out, one of the most important positions to recruit in numbers is the offensive line. To feel comfortable about your depth and your future, it is generally expected to sign a minimum of three lineman, often signing four or five. 

You also want to make sure you are signing guys of different builds and skill sets to ensure you have good depth at all three positions: tackle, guard and center.