I've seen three shiny pokes (not including Red Gyarados) in all my pokesturbation time. One was a Nidorina in the LG Safari Zone. Bitch let me throw a handful of balls before running off. Another was in a wild double battle with that Claydol guy. It was a shiny Magcargo! But my asshole ally killed it before I could "stabilize" (kill Claydol and the other random poke). I was pissed. Finally I found a shiny Cacturne. Blissey Seismic Tossed it before a few balls caught it. The thing turned out to be Modest, which can work out...
Still looking for a shiny Weedle...
Still looking for a shiny Weedle...