Bass Drum Technique
I found this video of Steve Smith using all 4 bass drum foot techniques in a sequential exercise. Heel/Toe (or leg/Foot depending on which school you went to!), Flat Foot, Heel Up & Full Leg. Give this exercise a go, it is extremely good for developing your foot technique. Remeber, slow, slow, slow at first, over emphasizing the movements & then gradually increase you speed.