He left Powell Peralta a year later when they would n't allow him to turn professional and joined Dogtown Skateboards .
In 1979 , as an amateur , Hosoi was sponsored by Powell Peralta .
Hosoi left Powell Peralta a year later when Powell Peralta would n't allow Hosoi to turn professional and joined Dogtown Skateboards .
In 1979 , as an amateur , Hosoi was sponsored by Powell Peralta .