It’s working great and you mentioned springs and hinges and trial and error. That’s how I roll! So my question is, did you build the frame out of lumber?
yes, but that angle sometimes doesn't work on some materials. So I lift it up for a steeper angle. If or when I do another one I would add springs on the top and hinges on the bottom angle so the deck will shake when the material hits it. It's all about trial and error.