Hi Spudgun,
I have a few ideas for you.
Firstly I should say that I generally do two set piece exercises but three is fine too. Whatever exercise I finish with I make sure they have got their eyes closed - typically it is magnetic hands.
I will often tag on a few procedural instructions at this point and also get their agreement that they are ready to be hypnotised. For exmaple let's imagine you have explained magnetic hands got their arms out and they have closed their eyes. You run through the exercise and their hands are just about to touch, just keep the stream of words flowing as they are looking for cues from you about how to proceed, you can use this as an induction at this point without actually committing to it overtly by not using the word sleep or hypnosis.
So their hands are just about to touch 'thats right an inh to go and when they touch just let your hands drop down and your head drop forward and relax, just go inside. In a moment I am going to touch you on the shoulder and say 1,2 wide awake and your eyes will open and you will be ready for you next set of instruction/ready to be hypnotised. Nod your head if you understand. (Touch) one two wide awake.'
You can do that with magnetic fingers too before you do magnetic hands. This in my mind is essentaiyll using these exercises as an induction but not testing your work. Just using the opportunity to get them used to things and dishing out the odd bit of procedural instruction and of course observing them.
Anyway when they open their eyes after you touch and say 1,2 wide awake you have choices.
My preferred approach is to not even give them two seconds to re orientate themselves just simply say 'Excellent' stick out my hand as if to congratualte them and do a handshake induction. 'Look at your hand....'
or a eye to hand fixation 'Excellent, can I borrow your arm' Take thei arm and put it in front of their face. Then you are back into the handshake patter.
Alternatively and slightly more permissively you can congratulate them and then get into any other induction. If you watch the vid clip here you will see what I am talking about. I have just done magnetic fingers before this starts and did 10 -15 seconds of rocking his shoulder and deepening, again without really mentioning it was hypnosis. In the clip you will see me use magnetic hands as an unnanounced induction but not really test my work just familiarise him with it and then wake up and bosh straight in with the handshake.
http://www.youtube.com/watch?v=STzta20HRew
Know where you are going to go after the induction. Let us know how you get on.
Anthony