Knock-down aerial brackets?

[Sprint]

I've been looking around for a while and have only found these:
PE Fabrication :: Antenna Knock Down (http://www.pefabrication.com.au/home.php?cat=249)
not big on the painted ones, stainless would be the go, but $192 is a bit steep.....

does anyone know of any other options?

[p38arover]

Phillip, can we assume you need it for an HF antenna?

[Sprint]

no, not HF, just longer and heavier than average UHF aerials..... the ones i run at the moment arent drive-through or undercover carpark friendly.....