How long is a piece of string! The answer is it all depends
- On average, spots you can park at get clobbered more than more remote spots,
- How heavy is your gear and how unwieldy is it to move? On the other hand, how fit and strong are you?
- If working some distance from your car, you will be less enthusiastic about the trip back to the car after a hard day on the shovel. on multi day trips, you can leave your gear at the spot overnight, but thieves and unexpected floods can be a problem. These issues have both happened at Oallen and Tuena in recent years.
- How long is it since a flood left new deposits of flood gold, or stripped some gravel making bedrock more accessible? These can be very good spots indeed, even if previously well worked, and close to parking.
- Can you move banker, engine, fuel, hoses and digging implements (not to mention drinks and food) in one trip? If you can, so much the better. Wal has been known to travel significant distances with his large banker and gear (with Liz to help). However, he would always have tested the location to determine that the trip would be worthwhile. Some prospecting up or down the creek with a pan and shovel is an absolute necessity before carrying your gear in.
- I've seen some efficient setups on trolleys and backpacks, but the smaller banker you have the easier it is to move. Jemba's little banker is brilliant in this regard. It's worth cutting your carpet or moss into two bits to see how much gold finds its way into the lower half of the sluice, by cleaning up the two sections separately. You might be surprised how little it is. Bazza's little home brew banker caught 98% of the gold in the top sections. So if you need to carry the banker, you may be able to make it shorter than you think.
- How far from the water depends on the length of hoses available and the efficiency of your pump. The more hose you have and the bigger your pump, the harder it is to carry any appreciable distance. How much water is in the creek is an important consideration, as it may be some distance between waterholes in some places.
- Where ever you set up, the key is to put as much of the right dirt over the riffles as possible, given the time available. Test panning before setting up, and while banking, to make sure you are still on the gold line is essential.
So sorry I can't give precise answers. Where I usually prospect (Oallen and Tuena) you can usually find a half decent spot within striking distance of the car, but can be well rewarded by venturing up or down the river somewhat.