Originally Posted by jasonv
I don't think that wings would be much different than on a steel plow. The only thing you might need to do different would be to run a piece of steel between the vertical braces of the plow frame to attach to, IF the wings happened to want to attach to somewhere there is nothing behind the poly.
If it were me, I'd get some quarter inch steel plate and cut out braces the same shape as the poly surface, and attach them sideways to the first vertical brace, just sticking out the proper distance. You can get a piece of barrel plastic and stick it under the edge of the poly to extend the face.
good ideas & my wheels are turning