If I was the land owner and somebody asked for permission to work my land, I'd probably give permission with a set of limited conditions...
However, if that agreement was presented, he'd get booted...this is known as a one-sided-screw-you-contract...
To clarify my opinion...if the landowner asked the hunter to perform a task, then a variation of this type of contract may be applicable. Although, in this instance, its just the opposite....you're asking the owner for permission...
A simple agreement would be more applicable and get you onto the land...
Treasure Trove Agreement
Agreement between the Treasure Hunters (your name/s here) and the property owner(s), _______________________________________in regards to the finding of treasure trove on property located at_____________________________. This agreement establishes that (your name here) have/has permission to hunt for objects of value on the property owned by the above said person. (Your name here) will be held harmless against any and all claims of other persons in regards to the treasure found.
The percentage of the found objects after expenses are deducted will be _____ percent for (your name here) and the other _____ percent for the land owner.
(Your name/s here) agree to:
1. Notify land owner of all items of value found.
2. Respect land owners privacy in disclosure of finds to public.
3. Share general historical information known about potential items of value.
4. Disrupt land owners property as little as possible and practical.
5. Return disturbed property to original contour as best as possible/practical.
6. Furnish all equipment and services required for the Dexter C. Hulse to retrieve finds.
7. Furnish land owner lists of possible purchasers of their portion of items of value.
8. Provide sale of finds if desired.
The land owner agrees to:
1. Provide any information known that maybe relevant to the search.
2. Find the (your name here) harmless against all hazards or damages that may occur.
3. To pay any and all legal fees required for any disputes arising from the find of items of value.
4. Remain at least 15 feet from the (your name here) personnel at all times while locations are in the progress of being sought unless asked to help dig/recover.
5. Not to disclose the apparatus, equipment, methods or tools used to find and retrieve items of value.
6. Be responsible for any and all taxes and or fees on his/her/their share of the finds.
7. Provide notice of known potential dangers (gas lines, electric lines, phone lines etc.) most importantly buried ones.
____________________ ______ ________________________ _______
( Your name here) Date Land Owner/Owners Date
__________________ _____ ________________________ _______
(Partners name here) Date Land/Owner Date