Cool. Then there's no reason for you not to do the following test:
Your wife is in a room with 6 upturned buckets, you are in a separate room from which you can see nothing. Your wife rolls a fair, 6-sided die and places an object that you can successfully dowse for underneath whichever bucket is indicated by the die. Your wife also picks up and puts down the other 5 buckets, to ensure that all 6 buckets are disturbed just a little bit. She then leaves the room by a different door, ending up in a different from to you, from which she can also see nothing of the buckets. She calls to you that the test is ready. You go into the room with the buckets and find the object.
That's a fair, double-blinded test, and you will be under exactly the same pressures/lack of pressure as you were for a test which you claim works. So, if that test works, then you know that a double-blinded test works and that you have nothing to fear from a double-blinded test, which means that you have nothing to fear from a test conducted in front of independent witnesses. If it doesn't work, then you need to re-think what exactly works and why.