In short no, but if you like to torment yourself then there are some possibilities.
It can depend on the value of your coins. Here in Australia, we have $1 and $2 coins, which make that possibility a lot easier. In the US, they have coins that are of a lower value, which means that you have to recover far more coins. I don't know South African currency. I have met people and heard of people that live to detect (or was that, making a living out of detecting). the ones that I've met, passing through town, live in motor homes and travel around the country side, detecting as they go. Very annoying for us locals, as the next town is too far away, and these people breeze through town twice a year and pick the place clean while I'm trying to make a living.


I have heard of a couple of people detecting for a living in Sydney. they hunt for about 3 or 4 hours a day (husband and wife team). they find enough. in most cases, these people are semi retired and have a second income stream.
I have heard of a fellow who travels to a number of Pacific islands, detecting as he goes; and does very nicely. on one occasion, he hunted around Bali for 6 weeks and ended up with enough for six months wages, plus rings. A number of these places have not seen much detector action!
If you think a bit outside the square a bit, you can come up with places close to home that have a lot of coins, but are not in the general thinking of most detectorists. places like public pools, professional sporting arenas, that don't have public access and other places that require you pay to enter them. For these places, you can either, just ask to hunt in them, or you can increase your chances, by finding some leverage, that you can obtain entry. ie, offering a needle removal service (the Ace can't detect these). In schools in particular, I know for a fact, that School principals worry about this. I own a ferry floss machine, and I use it as leverage to get into spots that I can't detect other wise. There is always the ring and jewellery recovery service. You offer to find a lost ring for a fee.
Then if you want to use different detecting technology, then you can set up an underground gas line and electrical wiring locating business. It pays well, but has high insurance costs. ( I wonder why)
Anyway, like I said, if you want to torment yourself, there is just a few thoughts (and I didn't mention anything about gold hunting)
I hope you're sufficiently teased!

Mick Evans.