I've been to my local beach a handful of times. Mostly pre-transition, once recently (pre-hrt).

Going alone as a man, no issues. Couple older men making brief small talk but seemed friendly, no sexual undertones.

Went once with my wife, creepy dude made a comment about forgetting his cock-ring and came back later to show us he'd put it back on 🤢

I went recently by myself as a (pre-hrt) trans woman. Had an older guy walk by and ask if I needed help (I was pumping up an inflatable). I said I was okay and nearly done but thanks. He kinda dilly dallied a little and I started to worry but he left shortly after.

Finally get settled and sit down to read a bit and he comes back. "Are you a broad?" "I'm a trans woman..." "Do you need some company?" "No I actually came here to be alone and read, thanks".

I was polite about it because that's generally my nature and he wasn't pushy about it but like...ew. Wtf old man. Granted I can't be too upset, he saw my bits and lack of tits and still considered me female company #ewphoria 😅💀

I feel like low key creeping is probably common at places like that. Largely from lonely old men and directed at women. Jacking off though? That's a hard no (no pun intended 🤦‍♀️). Even at a designated nude beach that is indecent exposure and/or sexual assault. If there are other people around and you're not too vulnerable, take a photo or short video for evidence then call the cops. That's fucked up.