So I shaved my antenna today. Here is what I did:

1. Removed the antenna and taped off an area of about 3" all around the hole
2. Sanded the area around the hole inside and outside down to the bare metal
3. Cleaned the area of sanded paint dust
4. Setup the fiberglass resin and hardener
5. Cutout three squares of fiber cloth
i. Square with about an inch on all sides of the hole
ii. Square about an inch on all sides bigger than the first
iii. Square about an inch bigger on all sides of the hooe
6. Soaked the smallest square(i) with resin and hardener mix, then applied it inside the trunk.
7. Soaked the second square (ii) then applied it on top of the first square.
8. Soaked the third square then applied it to the outside of the hole
9. Accelerated the curing process using a heat gun on the lowest setting
10. Once cured, sanded the outside of the car until the fiberglass was smooth to my eyes
11. Sprayed sandable primer over the fiberglassed hole to see the imperfections
12. Applied bondo to the less than flat areas, then sanded once it cured
13. Sprayed more primer to check for imperfections

After the 13th step, the area looks really good. Next is to sand using a higher grit to get a 100% smooth surface.
I will do that another day, as I have a function to attend today.

PS: I do own a welder, but I am not comfortable enough to weld a piece of sheet metal in there. I guess I don't have the guts to do it.

PSS: My radio reception is still good

 

any update?

 

The car will be painted in August, I will upload finished pictures then.