Just a comment to see if anyone else has this issue.
I dowse the best right before going to bed. If I wake up from sleep or a nap my dowsing is useless. My yes and no answers have changed over time, no longer are my answers a swing to the right and left, and up and down for the pendulum. Also, I am also positive that dowsing can not predict the future no matter how in-tune you are.
Still struggling with the one hand finger dowsing technique though.