Used Hatch Edge Chips
I used Fiber Tech from Evercoat
http://www.evercoat.com/productDetail.aspx?pID=13
As the primary filler to build the parts back up and make new tips. Once I got that shaped, I used Metal Glaze from Evercoat:
http://www.evercoat.com/productDetail.aspx?pID=1
to get everything level and smoothed out. On top of that, I shot high build primer. There was a lot of sanding in between, but once that was all done, you cannot detect the repaired areas at all.
I would use the same approach on a hatch. Build with Fiber Tech, sand, spot fill with Metal Glaze, sand, prime with high build, sand, and then seal (epoxy) / base / clear. The red glaze is laquer based... it's not recommended to use it under a urethane paint.
My tips are holding up great, and I can't tell where I crunched the spoiler...
{the "crunch" was about 1/4" deep and 2" long, right on the trailing edge of the spoiler}. I did spend a fair amount of time getting them 'just right' before painting though (by way of a ton of sanding). Just remember, paint doesn't hide mistakes, it magnifies them. Do the surface work right and it'll be good.
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Has anyone/ is it possible to put the back glass in yourself? The BEST quote I could get from a glass place was $115 to put my glass from my old hatch into my new one. Is it possible to buy a tube of the glue for a caulk gun and put the glass in myself? I can't help but think $115 is a bit steep to squeeze out some glue and set the window down...they're not even going to be holding it up!! Any advice from anyone would help. Thanks. Swat 

