It took me a few years of going to nude beaches and resorts to get comfortable enough that the erections happen pretty naturally now from time to time. The nerves are quite a bit more relaxed knowing the environment is so chill. I see boners almost every time I'm at a nudist event and that's ok. I have also displayed one of my own from time to time.
Comrade:
Your opinion about getting boners when in a group of naked men is totally on target. You have it right.
For me, I see the fact as a natural, expected--and happy--evidence of the subtle pleasure lurking in every male that comes from seeing a phallus on another naked male. The human penis is a universal, primal, eternal thing that represents nothing less than the promise of utter ecstasy to the man having a penis. I think whether your average Joe is aware of this truth does not mean it is unusual or awkward to see another man erect, or to be that naked erect man. Accordingly, all men in his company should simply acknowledge the erection, enjoy the sight of it, and find comfort in the fellowship among their tribe that the erection brings. Enjoy the sight! Even compliment the erect comrade if appropriate. But leave it at that.
Agree?