G'day
Gold will do funny things to people, including people you are related to and so called mates you think you know and think you can trust, also there are those out there who will think nothing of pocketing their finds and then sharing yours when you are good enough to be honest with them, I have seen it all believe me and have learnt from bitter experience that people no matter if its a nephew or a trusted friend or how well off they are, they can and will rip you off if they get the chance when gold is involved.
You really only have a couple of choices, either make sure you have an agreement of sharing finds before you hit the ground or just go finders keepers, if you make the agreement before you start detecting then no matter what is found you are both obligated to share with the other, you just never know one of you might hit the jackpot within minutes of switching on your detector, have seen this happen with one bloke ground balancing his detector and then ten steps later pinging a 7 ounce nugget, on the other hand if you go finders keepers until a patch is found and then work the patch together and split the proceeds is another method you can use, that way all parties can contribute by putting in the same amount of time on the ground.
There are also the parasites that will latch on to others and pretend to be new at the game so as to be led around to your spots and old patches and then pocket what they find without telling you about it,and then brazenly put out their hand for their share of what you have found when you have an agreement on sharing finds, all I am saying is take your time to get to know your partners and make sure you feel comfortable with them, because the more time you spend with these liars and ******** the sooner the cracks in their stories will appear and you will realize what sort of person you are dealing with.
Avoid people who are way too hungry for the gold, if its all important to them and they get the sads when others around them are getting a bit here and they are not, they are the type of person that I have found to be the most untrustworthy, and I have also found them to be the type who are very lazy and will contribute little or nothing to the legwork involved in finding a spot or patch, but when you do will be more than happy to dive in and clean it or just sneak back there on their own without telling you.
cheers
stayyerAU