I'd love to find some hot amateur couples who'd be willing to do customs for money lol.
You'd find a lot of willing guys lol, but the problem 90% ot the time is what I already quite obviously implied, that the girls still have to be convinced or that the men "believe" they already did that based on some vague conversation they had while drunk/high some time ago, or it may have been a legit, sober and serious convo but, as everyone knows, women do reserve the right to change their minds anytime they want and for some or no reason at all. Lol. But for some strange reason, the guys think all they need is for me (a stranger) to make that "push" needed and with the help of alcohol, it will "for sure" happen. Lmao!! And so there is always some scenario that they'll suggest. That I be seated at some hotel bar and they "just happen" to walk by and he recognizes me as an "old friend from college." They decide to stay over for a drink and "catch up" and from there, it'll happen as planned/hoped. "Trust me, I know my wife when she gets drunk. Just trust me on this." It's the same story with almost no variation over and over again. I have never actually fallen for it so, in fairness and in their defense, it might actually work, who knows!!?
If you're willing to pay for it, save yourself the time and trouble and go straight to the "amateur pros" on Pornhub for a custom vid that will come out exactly as you envisioned it. But I know, I know, part of it is the thrill of seeing people who aren't doing it professionally already. That is part of the thrill of voyeurism after all. Because if they know and like that you're watching them, it doesn't feel as "forbidden/taboo" and exciting anymore. I had one guy who offered to allow me an actual window seat outside their home without his wife's knowledge. It bothered me too much. It probably would have been more ethically comfortable for me if they both didn't know, ironically, because they're not really losing anything from my watching and their ignorance of it is their bliss. But his awareness makes me feel he was selling something that the party being sold gave him no permission to do.