For anyone reading this, I made a very effective and simple fixed dust shoe for the 611 that just uses a little 5mm acrylic. The F360 file and images are in this thread: Dust shoe made from 5mm acrylic (files included) - #4 by JoelBennett
*The Fusion file also includes an extremely accurate Z-Axis & Dewalt 611 model for anyone wanting to make adjustments.