Ok, here's some pics of it working. If someone can tell me how to get a video up, I'll put that on too. These pics are stills from a video, so apologies for the clarity.
Because of the long dry grass, it did have a tendancy to sometimes flick the grass over the top, I cured this by bending the tynes on about a 60 deg angle rearwards, about 75mm from the end. As in the pic below.
And here's a pic of the whole lot ready to head of to work!!! hahaha