Using a copper clad for high freq. circuit

Is a copper clad just a piece of sheet copper?

I want to build a dead bug circuit, so do I just solder on the ground points to the copper and leave the non-grounded connections in the air? Or perhaps build "islands" with insulators.

Is that how it works?

thanks

No, it's a PCB with solid copper on one or both sides. The major problem with this approach is that that copper becomes a heat sink for the soldering iron and makes it almost impossible to solder.