Just wondering where binacle is in Y. I have 2 badges and I own rock smash.
Yes, it is possible to get Binacle in Y by using Rock Smash on certain rocks on Routes 8 and 12, Ambrette Town, Cyllage City, and Azure Bay. The encounter rates for Binacle in all of the areas are 34%.
Hope this helps!
Source
It is possible to get Binacle in Y, you're just unlucky with encountering one.
Locations: Route 8, Route 12, Ambrette Town, Cyllage City - Rock Smash
http://www.serebii.net/pokedex-xy/688.shtml
