On another trail, search your heart, Do you really equate DCI with marching. It is entertainment, but it is not marching. In a marching band, everyone marches and you do not need a Mac truck to haul props and concert instruments (played by stationary performers) to each "show". I am not advocating military march style, but we have drifted out to sea with this corps style thing.
Cover down, guide right, get halfway between the person on either side of you, take the same size step, and fit in your diagonal.