There is a great description of this in Alex Comfort's The Joy of Sex. I bought my copy in the 1970's and still have it. If the wg is sufficiently skilled, it can be fantastic. It isn't necessarily a domination thing, although tight restraints and constriction have their own special properties. It can be used for sensory deprivation ... if you can't see or move, you focus more on the sensations you are being given, whether in the form of touch, taste, texture, sound and even smell. The best I had recently involved all the above, plus being brought to the brink several times, tantric fashion, till the wg hopped on top of me in cowgirl and I exploded in a full body orgasm. You have to be prepared to put all your trust in her though!