Bait Sasless? if you believe some there's Barramundi over there with a mouth like a shark on 'em.
Those blue ex chemical drums are definitely the go, easy to carry a heap of them, and you might even be able to borrow a good long windmill rope and single pulley off the station, anchor one end on top of the cliff face and double your slow pull until you maneuver the lashed together drums under it.
I guess they would have fueled up before leaving not far back so it's about 1,000 lbs or a bit less and water plus - a guess - at say 100 litres in the tail if it comes up tail low and say 70 to 80 litres under each seat with say 40 or 50 each side on the floor pan if its reasonably level. And oh yeah, maybe 100 or so under the floor.
Not an altogether great weight done slowly, say twenty minutes on the hook, or an endless chain on your long cable.
But here is the twist, how long have we heard in this great country how pristine are the wild rivers, especially those two big ones in the west, the Margaret and Fitzroy.
Oh no they can't be dammed for extra production or anything can they? if you believe those idiot greenies and self serving interest soul destroying groups. All those people who claim to be stakeholders and don't have an ounce of skin in any of it, get the drift?
It must be just so important to get that six litres of oil and 100 litres of fuel and that nasty contaminating helicopter out of the system that why? you should work out how much it'll cost you with a decent profit, treble that and put it up to those self servers of pristine preservation, why they'll be falling all over themselves to pay you for you to be a good Samaritan in such tough conditions and for all your hard work i am sure.
You could start with Federal environment Minister Burke.
All the best