There are subtle verbal cues that give away the dominant modality the person thinks with: visual, auditory, or kinesthetic, then you can tailor the session for that modality, using inductions for feeling- or hearing-oriented subjects. My dominant modality is kinesthetic, so I tend to use those first anyway.

Even though we live in a visually stimulating environment, and society tends to express things to us in visual ways, the goal of hypnosis is to relax the person and guide them to a comfortable place, so we can relate to people how they are internally and we don't have to worry about making everything highly visual.