I find your report a little odd. I have been to many nudist venues, most in Europe, some in the U.S. and have never seen and erection. In a swing setting, when people are touching you may see one, but otherwise, a man with an erection his likely doing so on purpose. For an adult male, erections in nudist venues are highly likely to be intentional and NOT welcome, even by horny women. It is so out of place that it is more of an assault than being attractive. The BIG key component of the erection issue is that nudist venues are NOT sexual (swinger venues aside). There is nothing going on to cause arousal. If you argue that the sight of a random naked woman at a location with dozens or hundreds of naked people makes you hard, I tend to doubt your report. A typical nudist setting includes people of all ages and weights, perhaps struggling with beach gear, trying to set up camp to avoid the wind and too much sun and take care of the ******* they have tagging along... Take away the ******* and it is still couples trying to make themselves comfortable outdoors, enjoying being nude with other like minded people. It just is not sexual. But yourself in the woman's head, she is enjoying the company and conversation, maybe even flirting with an intelligent man (not his penis). There are scores of naked men/couples who are being polite and social, not a single one with an erection; and along comes "poop for brains" with a boner. My first thought is that everyone he comes close to will simply turn their backs to him.