so i finally got the skirt fitted properly with rivets installed in the rear wheel arches - two on each side.
the following pic only has 1 rivet installed in the sideskirt/wheel arch but even with just the 1, it held really securely (drove it around a fair bit with just the 1 rivet in each side)... however, i did end up installing a second one on each side under the first ones. then i sealed them up with "Loctite" sealant for extra security..
after 2 rivets + loctite sealant:
pics of her at her new home.... (moving apartments is a b***h)