It took me over 20 hours to clear the genital area. Even though it only took about 5 hours for one clearing, the hairs just kept growing back.
The area cleared was the penis shaft, a one inch area around the shaft, the entire scrotum and a one inch wide strip from the scrotum to the anus.
Yes, it hurt a lot, but it was worth it once I was post op.
The only difficulty was finding an electrologist who was willing to work on this area. Many will do bikini line electrolysis, but only a few will go near male genitals and only after a relationship of trust is established. I had to be honest and sincere about my need to transition. Once trust was established, I brought in a diagram of the areas my surgeon wanted cleared. When my electrologist understood what needed to happen, she was more than willing to provide the electrolysis needed.