Exactly, and weld a 3" nail on the back.
Your theory has a few flaws
For eg there many ways to "weld a nail"
You could prolly rule out mig, tig and arc due to lack of material thickness & Current issues (parent material to thin)
Prolly Brasse it or oxy fusion weld it.
Issue now is the heat would burn off the protective zinc & lead coating in the "galv sheet" and accelerate rust.
A lot of trouble.
In the past I have used alloy plate & extrusion.
Easy to work with and won't rust.
No welding reqd just stainless steel pop rivets.
I guess what I'm saying is it's not as simple as "welding a nail on it"