Big and not big
My problem is rather peculiar. For most of my adult life my cock when erect was about 5.5 to 6 inches. I had one or two complements but it was just fine. After a diagnosis of prostate cancer and the surgery to remove it i spent 4 years unable to get an erection - devastating. Three months ago i had a prosthesis inserted with a pump in my bolloxs. Now I get an adequate 5 inches. Sigh! But the point of this post is that when it is not "erect" it is 5 inches also! It's angle of dangle is just less (a bit lower than 90 degree to my body) and it's less hard. So now I'm worrying if I go to the nude beach I'm going to be abused for walking round with an erection.
First of all, congratulations for beating your prostate cancer.
Also, I suggest you go back to the nude beach you used to go to before you got ill. Should anyone question you, which I very much doubt, you can explain why your penis has the appearance it has. Depending on the kind of "rods" you now have in your penis, chances are that you're able to further bend them into a more "down" mode, avoiding any such possible misunderstandings. Regardless of this, you've got the same right to keep enjoying the nude beach as every body else.