Also, Victoria is the only state that I'm aware of that light duty trailers (as outlined above) do not need to be registered. Therefore towing interstate is illegal. Few years ago there was a zealous member slapping Victorian holiday makers with unregistered vehicle fines for towing a 6 x 4 just over the border into Mulwala NSW. Popular fellow he was...
Don't know if they're available for the Beta range but I've found the Hyde skid plate/pipe guard super strong. It's not sexy and can collect a bunch of mud in winter rides but my '12 Berg has 7000+ klms and the original pipe is still true with zero dents