Hahahahaha without a contract you can/will be removed when the gold glows---oops I forgot you must have the expertise to find first.... infintile booze for gold
Contract is not gonna keep you on someones property John...It doesn't grant mineral or property rights.. or remove them from a deeded property owner..If the owner decides your out your out

If you get written permission to hunt and the owner decides you are done on his property you can't hold the fact that you haven't shot the deer against him, Like I said the fact that there is no proven reserve when you write a "contract" to look for gold on some ones property creates a huge problem between both parties, like you said" when the gold glows" meaning neither of you knew what was there before you dug. Never been an issue for me or others I know. Guess we're better at making and keeping friends. The question was about what kind of offer to make an owner who is already willing to let you dig. You are talking about a lease to mine. Quite a different situation. Intent liability and property rights hold way more water than any personal contract or waiver....many a small claims case won proves it.
Fellas if you are out there happen to find someone who is willing to let you on his land to hunt anything get written permission. If you make a good find show him ask him if he wants to keep it most likely unless it is a major find he will refuse.....ask if you can come back again at that point he will have decided already if your coming back. When you do come back bring him a few packs of his brand of smokes....or a couple pounds of the venison you butchered or some of the placer gold you recovered. Some gesture in kind. He will like baked goods from your wife, historical maps and anecdotes from local history.
This fella has been around for a while he is from the generation that wishes everything was solid on a handshake, he may not say it out loud but, he likes that you want to bushwack and seek something out... he wants in on your adventure even if he can't follow you to the back forty. If he felt any different he wouldn't have t
let the conversation go this far.
And if you secure this permission you are held to the utmost standard, Be honest, cover your holes and don't disturb anything historical without asking more specifically. Break any of these unwritten rules and you are sure to be ousted and never let back. You will soon find out how many people he knows in the area and your chances of future local access diminish exponentially.
If you are large scale and can secure a lease on a property with proven reserve lawyer up and go by the books.
Contracts only hold power once in court.....Do you really want a property owner to take you to court because you walked out three Saturdays carrying a skunks poke of square nails and pull tabs. Because of a trash layer and the owner doesn't understand what detecting a site actually requires. And how many Saturdays it may take before you even find a coin or small nugget. Who holds the burden of proof? How do you split square nails based on value...Are there full body cavity searches? Or do you have to stop at the guard shack and open your lunch box? Are you going to spend the money in small claims if he breaks the contract?
Get written permission great!!! Someone wants a "Contract" WALK AWAY!!!!!!!
John nothing advised by anyone was "Infintile" why do you always resort to insulting your peers just because they have a more sophisticated view?
Keep in mind there are other people out there doing this that don't have problems securing access, and may just do it differently than you to no ill effect.
You are not the know all, end all, be all, in respect to gold mining treasure hunting and detecting some of your stories are interesting and your work from a long time ago commendable but, sometimes you just cross the line and just become insulting.