I have a 60ft garden and my maximum height I can go is only 20ft. I would
like to TX on 80-40 and on 160 if possible but I might be asking the
impossible with the 160m..
I do not have a ground system in place. I can put some earth rods in and
some surface wire but I have no way of putting any wire into the soil
itself. So I am a bit limited.

I have a 150ft of flexweave wire that is uv plastic coated to play with.
I think I have three choices to chose from at the moment.
I can use the SGC-230 with an inverted L.
I can use the SGC-230 with an inverted L with homebrew traps built in.
I can use an inverted L with homebrew traps built in but without the
SGC-230.

What would be the best choice and why?

Many thanks