Spare time to build an LRL!

[VECTROUM]

Hello to all

Because of this situation(virus) i have some spare time and i want to build
an LRL. I have allready build Totem and Francos devices.
Both of them have the same reaction in my area, they are sensitive in south-east direction and in order to work without interaction i must lower the gain significantly.
The result is to be unable to detect any burried metal.
I will apreciate if suggest me any "working" devices to build.

Thank you in advance.