I would expect the only time they really use a true fullback would be goal line and maybe short yardage situations. Otherwise it will be a tight end they bring in motion and drops into the "fullback" position.
Ervin needs to get rid of the white head band that sticks out of the back of his helmet and covers his last name. That's what's holding him back. No great running back has ever worn those
Much easier to stand out on defense even if those around you aren't that great. A good line can make an average RB look really good. Really good WR can make an average QB look much better. Bad Oline and bad WRs can make a really good QB look bad