Rotational mass, its an axle killer for sure, but I have spares...
Im looking at getting some 40series bowties or similar- they are still quite large, but alot lighter compared to what I have now, and should allow for a bit better handling on grass too.
Luckily the camera I killed was my old one, an amazing 4 MP 6x optical zoom item I've had for 6 years, recently replaced by a nice FZ28 ( I wont be strapping that to the truck in a hurry). Gonna replace it with a dirt cheap little digital camera for truck duties, something alot smaller and lighter that wont have a telescopic lens to damage.
Anyways:
http://www.youtube.com/watch?v=6T97wD1FgQ0
Enjoy