Hi VicGold, some great advise to follow up on has been mentioned above by others.
It took me 4 years and 4 different detectors to find my first piece of gold and trust me, my confidence, patience and determination were shot many times over those 4 years.
I finally bought a 4500 and bingo got my first bit at .15g, since then I've learnt lots by research, talking to the right people, going detecting with others here on the forum and so on, it takes time to learn the skills and the more you can get out with others and learn off them the better your skills will get.
A piece of advice would be to take one of your sub gram pieces with you as your test piece on every trip, find the hottest piece of ground in your location that day and bury the gold so it is just detectable in your normal settings you would use, then spend 30 mins going through your settings one at a time and testing, take note of which settings were best, if you can hit that test piece in the hottest ground for that location then you won't miss much if you swing over it that day.
You need to do this for every trip as what works in one location may not work in the next gully.
By taking 30 mins doing these tests every trip out you will spend the rest of the day confident you have the best settings for that area on that particular day (next day may require different settings due to emi).
This doesn't always mean you will swing over a piece of gold but if you dod you will have the best settings to hear it.
Then there's learning to read the grounds and know where to swing, this you need more help with learning so you are not just swinging over barren ground that others have dug for noise, trash etc etc
The 15 evo is a great coil and will find you gold no problems, you just need to learn when to use each coil, depending on depth of ground, size of gold in that area, emi conditions, percentage of clear V's scrub covered grounds and the list goes on.
It all takes years to learn, especially if you are going solo on trips. Keep and eye out for some members trips that pop up mainly on long weekends and join in, take it as a learning trip and you'll find the guys will help you where they can.
Good luck and keep at it, just try to take 1 new bit of info learnt each trip and it will soon start to come together with better finds.
I had a 3 day trip last week with a mate, him on his SDC and me with the Gold Monster and 5" coil, he got 2g and me 4.3g, all tiny stuff but it's not always about how big a nugget you can find, sometimes it's using your equipment in the right locations, understanding it's limitations and hearing what it's saying to you, I got well over 100 bits and as I said, it's tiny gold but it adds up pretty quick on the scales
erfect: