Having coached the power sweep as an assistant, I have observed some coaching behaviors that affect the success of the sweep. At least I think I have anyway.
1. Head coaches always want to tinker with the sweep. That's their prerogative of course, but they should not do so off the top of their head, because they think they are coaching geniuses.
2. Changes to the sweep should not be made based on how the play looks being run against air, bags or how it looks on the white board. Defense players react differently in game or scrimmage situations. Teach the sweep against bags, troubleshoot at thud speed or above.
3. One coach should teach each position. It may be the same coach for different positions, but having 3 different guys tell the FB three different things leads to disaster. This seems to be particularly common with telling the flex end who to block. Everyone seems to have a different opinion during practice.
4. Avoid telling the FB or the flex end that they have to "go get" a particular defender. This play works when the blockers are moving downfield in disciplined tracks, and is in effect zone blocking with the zones marching down the field. Chasing defenders is a very low yield strategy.
5. Respect the spatial relationship between the pulling guards and the FB. Resist the temptation to "fool" the defense by lining the FB up in weird places where he cannot get to his assignment when he needs to.
6. Don't get discouraged if the sweep doesn't work immediately. One of the key elements that make the play so effective is the spacing of the TB and the guards as they turn up. This takes reps and patience. The play works best when the flex end, pulling guards and TB are all within about 3 yards of each other when the TB reaches the line of scrimmage, and all are moving downfield.
7. Don't underestimate the psychological benefits of the play. Run it when the defense knows you are running it, and demoralize them with your success. Run it three or four ties in a row, then run a pass or counter off of it. Run it on third and long.
8. Take advantage of the trips formation that results on the strong side. Have a good package of passing plays that suits your quarterback and receivers. If your quarterback is a good runner, fake the handoff to the TB, let the TB get in the convoy and run the sweep with your QB once in a while.
DM me if you have any questions or suggestions. I don't know everything about this play. Let me know if you want to run the A gap power as a constraint play and can't find the materials.