I fixed both boots with straps now and glued on the top piece. I did change the back strap so it goes around my ankle stopping the back piece from scraping along the floor. Still gotta do the detailing like the black and yellow chevrons and weathering but otherwise the boots are done.
The shins are now done printing, I'm busy with work for the next week so no filling/sanding/painting for a while but I'll deffo be setting more pieces to print while I'm in work.