Rally recommendations?

Where I'm from (Seattle, Washington, in the Pacific Northwest of the US of A), I attended a number of motorcycle rallies each year - a good way to meet people and ride a new area of the country. They are also relatively inexpensive places to hang out for a few days - secure tent space for the gear, showers, a meal or two included and a few hundred folks to share a beer or three with.

Can the Wild Dogs recommend any good rallies in South Africa for the next couple months? I don't want to waste time hanging out with a bunch of leather-wearing posers (as in Harley Davidson) - prefer dirt oriented  rallies where they actually ride bikes.