I was going to type a long post on this...but really, it just takes a lot of practice. I track with the stock pedals and also have a fairly narrow foot, it doesn't matter anymore. I do it all the time, on the street, on the track, everywhere. The more you practice, the more seamless it will be. I personally don't think you need to change pedals; you could and it might make it easier, but it can be done very well with the stock pedals.
Just keep at it and practice everywhere.