Dummy Runner or Option Runner

When I started coaching I got into the habit of asking players to be a 'Dummy Runner' in certain situations and very quickly they became used to being that 'Dummy Runner' which created problems further down the line. As the team progressed we then started getting the half backs taking on the line and picking the correct option which then caused a problem with our Dummy Runners.

What had happened is that the players had got used to running the lines but didn't expect the ball but the halves where giving them the ball because they where actually the correct option as they had a gap in front of them. Arguments ensued and the whole issue had to be addressed and thats when I realised a mistake had been made that slowed down our progress.