I think there are different kinds of gloryhole pics:
1. Pro pics with models who know the guys on the other side of the wall. They do it for the money.
2. Staged gloryhole pics where the hubby or boyfriend constructs a wall and puts a hole in the wall and has his wife or girlfriend suck his cock through the hole.
3. real amateur single women who get turned on doing the deed.
3. Genuine amateur wives and girlfriends who visit gloryholes because their men talk them into it or perhaps it was the woman's idea in the first place.
What I find hot is the real amateurs, especially the wives and girlfriends doing it for their men. It's especially nice when they are very attractive women who could have anyone they want and can afford to be choosy. The idea that these trophy wives satisfy these strangers, strangers that they probably would have nothing to do with in their real lives. I look for clues that they are genuine pics of real wives. These work for me!

Milf sucking in gloryhole
 

She sucks her husband who encourages her sucking a cock in the glory hole

Me of my faves
 

Anyone have more of her?

Are you sure baby? It seems so dirty, are you sure you really wanted me to do this?

Most milfs are embarrassed in glory holes

Look Honey, you wanted me to do this and it's happening! Do you like seeing me on my knees with a stranger's cock in my mouth?

Look darling Stiff isn’t it...

Ok do your best

This lovely seems to express pure joy playing with and sucking strange cock. She also let's multiple men play with her tight smooth skinned body. She also got up close and personal with a black guy. He's not on the other side of the wall either, she let him in her room.

Here's all I have of the innocent looking little dark haired cutie stripped naked and on her knees for some very lucky strangers. I think she is so sweet and would like to see more of her, what do you think?

Mmmmmmmm
 

Oh hell yeah!!