What results and accuracy are you getting?
I tried a few, had some success but got discouraged when I didn't get any accuracy.
How exactly do you "get into state"? What sort of details do you see?
One obstacle: when I "decide" on something I can't "reset" and try again, the "blob-cloud" in my mind just forms the same basic shape depending on what I "thought" it was going to be.
I have had some decent success... enough to support that something is going on beyond chance. Frequent meditation will help a great deal in being able to get a clear mind and to know what a productive state feels
like. Details of the viewings (like my clarity) vary. Usually it is when I am not thinking about the details that I get more hits. You really do need to to have a clear and focused mind, and that takes practice and patience. There is no way around it that I know of. If you lucid dream of have OBE's, you can try it from those state as well.
I have often struggled with that same problem of getting something stuck in my mind and being unable to reset. It is a common struggle with remote viewing.
Meditation, practice, trial and error, and a long view are the solutions.