Shiny Pokemon Figures Chaining Shiny Pokemon?

Chaining Shiny Pokemon? - shiny pokemon figures

So I tried a shiny Ponyta for almost a year, but I was recently in earnest with the PokeRadar. I have almost everything (even if my above string is only 39), but I have a question.

I know they have waited up to four sockets Shake, prior to entering a room, but that all the bushes are the same as that for the first time? What happens if one of the bushes is different, it reduces the chances for achieving a Pokemon? Please, if someone can help, it would be great. : D