It is hard to say, because by the time you are asleep enough to transition, you are most likely already having some bizarre hallucinations or disorientation. They can be different for everyone, and different for every WILD. People will tell you all kinds of different tricks.

Basically, they are all ways of getting yourself involved with the dream, so the fleeting hallucination will take over into a full dream. In your case, you are feeling tactile sensations. For that reason, I would suggest using some sort of tactile visualization. Imagine the feeling of something familiar that engages your sense of touch.

Try to go with whatever hallucination you are already having. For example, if you feel a sensation of movement and speed, try to turn it into a visualization of sliding down a slide. If you feel your legs moving, imagine yourself running, feeling the earth below you. If your mind is pretty much blank, you can create something simple, like standing in your own house, running your hands over something familiar.

It is best to chose things you are familiar with, so you are remembering instead of visualizing. It is much easier that way.