stalk blocks

I did a couple of things that worked pretty well last year. 1st we showed them the proper fundamentals such as athletic position, aiming points, fit postion, thumbs up etc. After they learned the fit position we ran a mirror drill where the WR had to put his hands behind him and mirror the DB trying not to let him get by. We then progressed into a game where the WR and DB were about 10 yds apart. I put a football behind the WR about 5 yards. The DB tried to get to the football while the WR tried to shield him away. This got very competitive and sometimes to get more reps we spread the kids out in groups of 4 or more with 4 footballs (1 for each line). You have to be carefull not to put the balls to close or you risk knees getting rolled up on. The last thing we would do is set up cones about 5-7yds apart. The WR lined up as normal on the LOS with a DB about 10 yards off of him. We would pitch the ball out to a back and he had to stay between the cones. The DB tried to shed the block and make the tackle. This was totally live. This was a great drill becuase the DB's got reps on getting off blocks and making open field tackles, the WR's worked on stalk blocking and the RB's learned to use their blocks.
One coaching point that stuck with me from Bowling Green's WR coach that I saw at a clinic is that they teach their WR's to punch recoil, punch recoil etc. So they don't get called for holding which is a tough call becuase usually if the backs get that far it has been a productive play. Hope that helps some.