I'd say my vehicle, as well as those who'd be going with me, are equipped to tackle quite a few of them (but obviously not all, especially the more difficult ones)..... Modified vehicles with appropriate suspension, tyres, lighting (for when needed), recovery equipment, spares and of course, reliability and a sound knowledge backed by common sense.
The problem is more along the lines of having to work weekends and other times that don't necessarily coincide with the majority of groups that go on trails or trail hunting or scouting.
Thanks for the info however, I guess we'll just have to stick to doing trail hunting and thereby acquiring knowledge with regards to the locations and other characteristics of these trails where ever we find time. lol