The extra book (11-9) safety section mentions that a "large diameter wire, or even better, a wide flat strap, has the lowest inductance and makes the best ground connection." Does anyone actually have conductive wire in that shape to reduce inductance or am I getting something mixed up here?
For RF, it is better to use this copper sheet metal strap wherever possible. The flexible braided stuff eventually becomes more lossy as corrosion and oxidation sets in and the small wires become significantly insulated from each other.
... A good [lightning] ground must have a very low impedance over a very wide frequency range. This rules out thin wires, and loosely woven braided conductors should be avoided. The very best ground leads are solid wide smooth surfaces, although braiding sometimes must be used in areas that demand conductor flexibility.