the point is that it doesn't work.
As for techniques the therapies often include having the patient identify a problem in their relationship with their father. If they don’t then the relationships with any other male relative or even acquaintance is explored until some form of relationship problem can be identified. This relationship problem is defined as "an incomplete bond and resultant identification with the same-sex parent.”
Ref: Nicolosi, J. Reparative Therapy of Male Homosexuality: A New Clinical Approach, Northvale, NJ: Aronson, 1991
It isn’t based on any research and those engaging in this cannot define just what an incomplete bond is.
Nudity in front of the individual that the client has the troubled relationship with is encouraged as is “cuddling” If the father is unavailable then a substitute male is used for this.
It is encouraged that female minors shower with their father.
Electrodes may be placed on the client’s genitals in order to provide painful shocks when the client is exposed to gay themed images.
Ref: Shidlo, A.; Schroeder, M.; Drescher, J. eds. Sexual conversion therapy: ethical, clinical, and research perspectives 2011
“Hold therapy” is almost exclusively done with children. The child is physically restrained while the therapist screams at them and encourages the child’s parents to express their hatred and disgust for the child. There have been some reports of parents being encouraged to hit, slap or kick the child. This will continue until the child admits that they are hurting their family and that they hate themselves for being gay.
Ref: Bright, C. "Deconstructing Reparative Therapy: An Examination of the Processes Involved When Attempting to Change Sexual Orientation. 2004
Other methods include sedation, isolation, sensory deprivation, physical restraints and hypnosis