Before I say anything this is something 100% consensual the person agrees to, eagerly attends, and multiple safeties to get out of it, change her mind or simple stop at any point. Lots of safety precautions, safe words, and levels of consenting to make sure the "CNC" portion of this is only roleplay.
With that being said I throw regular events called, "predator prey hunts." Basically a group of people meet somewhere out in the wilderness (usually the vegas desert) after dark. We have a meet and greet, go over rules, everybody introduces themselves, and figures out who they will or won't consent to. Then when everybody is ready I say go and the woman run their way to a check point about 2 miles away and back to the finish line. Purposely chosen on a full moon night and no flashlights allowed. 5 mins later the men leave and the goal is they "hunt" down the women along the way. If they capture them they can do what they want to them sexually (within the rules). I call it a predator prey hunt because it's very much like that. The women act as "prey" and the fastest/strongest male will get first choice of who he wants.
One woman signed up for the event and she eagerly told me it was when she was ovulating. This raised some concern for me and I asked her if she would prefer to attend the next event or at least require all men to use condoms with her then seek the morning after pill later. Instead she was excited and hoping this would result in her getting pregnant. Again concerned she hadn't thought this through I asked her more questions. I didn't not want to be part of a paternity battle or be called to court to help sort through this and explain everything. Nor did I want to aide bringing a welfare baby into the world. She assured me she wanted to be a single mom, she had a big trust fund, and sure enough drove up in a Mercedes. So I rolled with it and invited her to join.
She was an attractive asian woman in her 20s so it wasn't a surprise she was a target. However she didn't share with anybody she was ovulating. The first male didn't waste much time and within 2 mins he had her clothes ripped off and he was fucking in right there in the dirt. Eventually 2 others joined nearby almost like a pack of wolves wanting for the alpha to finish so they could come in next.. Another point when they were done 2 more joined in. She was new to a group concept but I could tell by the look on her face she was loving it!
A few weeks later I get a message from her and she told me she was pregnant. I was a little concerned now this was real she was going to 180 and want something different. But she was very excited. I also got more to the story. She was happily married but her husband encouraged her to go with hopes the strongest and fastest competitor would knock her up and he would raise their child. They both got exactly what they wanted.
Most recently have planned enough event and got a lot of requests from cuckold husbands to be able to go with and watch their wife. Sort of like a male Gazelle helplessly standing by and watching his wife get eaten by the lions.