mounting rear wing on hatch

[jamiemirror]

Stock wing use bolts. Try to fix your wing similar manner (maybe you can fix some screws on the bottom of the wing and use stock holes in the hatch for bolts). Stock wing uses rubber strips at the contact area (with the hatch) - you can buy such rubber elements from some hardware stores (if you have aluminium/PVC door and windows manufacturing companies, they can sell you rubber seals). For example rubber strip with V-profile will work fine.
http://www.alibaba.com/productsearch/Window_Seal.html