I used to line up on a line (with my throwing arm forward), but i recently have been making the move to the "straddle" form. By putting in the straddle form it helps me keep the disc on a straight line to the basket and eliminate my my left-to-right misses almost completely. The only thing i noticed was it takes a bit m ore effort to throw...say...25+ feet. I figured i just have to learn on how to use my legs more.
Any suggestions or helpful hints are welcome