Just had my Pokeman last week. I stopped eating 12 hours earlier than normies. I drank 1 and half gallons of prep (1/2 gallon more than normies). I was running clear, then a bit cloudy, then clear again 3 hours before the procedure. At the end of the day he rated my prep "fair" and said I would need to repeat in 5 years, instead of 10. He was able to see everything except, I guess, the fine lining.
I did stop iron and went on a low fiber diet 5 days before procedure. Not sure what the issue was. But at least he had good depth perception.