Bear with me, the pics I took are on my phone, and, being that I am not living in my house with my own computer, I can't attach them. . .I will do my best to describe:

Soapstone peninsula will have a 12" overhang (all one level--counter height--no separate bar). The decking is 3/4" plywood mounted on top of the cabinet base (not inside cabinet base), and extends almost 11".

Do I need additional support in the form of 2 corbels under the overhang, or, should the 3/4" decking on top of the cabinet base be sufficient?