What works

1. The most successful element I discovered so far is having a long sleep. As far as I can tell, this greatly increased the chance of having a wet dream. When I say a long sleep, I mean 10 hours or more. The nights that I had a wet dream, I had gone to bed at around 9:30pm or 10pm, and had the wet dream at around 6:30am. The most common time for my sexual dreams is between 5:30-6:45am. On those nights, I often get woken up between 2:00-4:00am by a very hard erection. I then force myself back to sleep, and a few hours later have the wet dream. This is pretty much the only certain factor I found so far. The rest are not very consistent.

2. This one only happened once, so I'm not certain about how repeatable it is. One afternoon, I had a 2 hour session of watching pornographic movies. I allowed myself to get an erection, but did not touch my penis. The length of the session resulted in vasocongestion (blue balls). I went to sleep 4 hours later and had a strong orgasm that night. I will have to further experiment with this method in order to further validate it. The main problem with this method is the length of time required to attain the vasocongestion state.

3. One potential idea is that very subtle stimulation during the day could make a difference. In one instance, I was watching an action movie during the day, in which a cleavage of one of the actresses aroused me. It was brief, and not enough to cause erection. But I had a sexual dream that night.