Thanks, guys

I find it pretty hard to detect when somebody else hide objects for me. When I already know where are the objects - rods show them easily. The rods cross over one another and over the found object.
But when I dont know location, I am not able to locate objects. I was successful maybe 2-3 times out of over 100 dowsing attempts. It really annoys me, but I am not giving up, I decided to learn this and will continue to practice.
You're welcome,
What your doing is not really wrong, it does serve the purpose of you practicing the mechanics of how the rods react and feel over a known target, however it is not the same as if you were on an actual field search when it comes to you dowsing for targets that you don't know what they are or where they are. Yes, the rods will react about the same when you do cross over the targets like when you are at home.
But there are differences in the dowsing process as to knowing where something is and not knowing where something is.
I can illustrate better what I'm talking about when I pick up my guitar and play an A Major scale over an A major chord, I know where the notes should be wether I play it forwards or backwards, very boring after a minute or two, but if I relax and let my thoughts, intuition and natural talent take the place of that exercise over the chord's rhythm, it's then that the notes start to become separated, arranged differently and more melodious than a constant, mechanical back and forth thru the scale.
So as with the dowsing rods, when you are searching for an unknown target, let your mind pose the thoughts, concepts and images of what you are looking for, not where, and let the rods do the tasks of making the locations for you. Follow the direction they indicate and learn all you can about what they are indicating to you, that's one of the fun things about dowsing.
It's ok to have a helper hide things for you, this will get your mind set for future field work, same concept, a person hid or dropped something but now you don't know where and that's the tasks of the dowsing tools once you formulate what you want to know during the dowsing process. Practice, Patience and Perseverance is paramount. Start out small and simple, let your helper hide a coin, then come into the room. Picture the coin in your mind and simply ask the rods "In what direction is the coin my friend concealed?" then let the rods give a response and follow the direction. Some other ways to search is to turn yourself left then right (called sweeping) while still holding the rods steady and the concept of the coin in your mind, then follow the direction the rods indicate. Also just letting the rods react without any influence from you and seeing what they do can be interesting. Try this outside as well when you can.
Eventually you will grow weary of finding things that you know where they are and the next progression will be to discover items that you don't know anything about or where they are, that's the real world and another fun aspect of dowsing.
By practicing what I'm talking about, this will assure you and your instruments will make beautiful music together.
Hope this helps,
Jon