Tonight I glued down the backing strips for each of the two foot shells, where the curved part joins the vertical area. This strip of PVC overlaps the two connected pieces, and helps strengthen the overall bond.
The aluminum I ordered from Discount Steel arrived. I didn't unwrap it, as it was apparent that there were a lot of metal shavings in the plastic, and I didn't want to deal with that tonight. But this should help get my drivetrain back in gear (so to speak).