I concur with Normandy's the first half of his last statement "Having said all this I personally would try to find an alternative.......... " For the following reasons:

1. There is never an issue unless something happens like an accident. Then the lawyers go to work.
2. It seems to me the potentional for an accident is there even though the operator keeps his limbs within the confines of the cabin. However, his arm is holding this metal hook that is protruding thru the mast openings. The mast has one or two moving up right sections with cross member and the carriage. Therefore, they maybe a potential for 2 or 3 members to act like a guillotine and contact the hook and the hook contact the operator abruptly and with significant force.

3. Should this happen being "cost effective" is not a good argument for the defendant but a great thing to hear for the plantiff's side.

4. Don't know how operators are "down under" but in the US many (not most) drive like demoltion derby drivers.