Tips for a blind?

We have a few older hunters in our group. One of them had polio early in life and has trouble getting around and balancing in a duck boat. We got a hold of a few dock sections and the hardware to go with them. Our plan is to erect the dock side-by-side to make an 8x8 platform. Does anyone have any tips for camouflaging the blind and for making it stable in the ND mud? We are thinking about knocking apart a few hay bales on top to look like a giant muskrat hut. Another thought is to fasten some sort of lattice or chicken wire around it and weave cut weeds through it.