Two methods that have worked for me.
1) If static full power take offs are required, sweep the area of all the loose stones. Start up and then go full bananas from there.
2) Keep the aircraft moving.
My own personal observations, I could be totally wrong here and open for correction, but.... Standing on the anchors, full power then going... the initial part of the run is always slow to accelerate. If you can taxi at a reasonable speed and then gun it (carefully!!!) you wont pick up as many stones, while getting the same performance as a static start.
My observations was that I was always coming back with a crap load LESS stone chips in the prop than other pilots, and I have never had a pierced aircraft skin.