Hi Helen:
Clients could never really explain just that they didn't feel the sensations the way they had on previous sessions.
I did an experiment with my students...i had them do a short session without symbols then add one at a time doing a short session in between. Not only did they feel the difference but so did the student they were doing Reiki on.
If I'm doing sessions in front of other people like in a fair I only use my eyes to draw the symbols.
I would be interested (if you decide to experiment) how you find it?!!
Thanks again for taking the time to respond to my question.
Love and light
copper