Finished up the boots.
For the actual shoes I got some cheap tennis shoes from Walmart in case I needed to glue/modify them (I did).
I also figured they would be comfortable than boots to walk around in as well.
The lace cover is held in place with Velcro that is glued to the covers and to the tongue of the shoe.
Makes it easy to tie them up and then place the cover over top.
For the main pieces, I attached them together with hot glue and elastic bands so that they can flex and be taken off of the shoes if needed.
The tension holds the pieces to the shoes nicely so no kind of "hard mounting" was needed.
For the hazard stripes I just cut out some vinyl in the necessary shapes and then stuck each piece on.
Then just painted up and weathered.