I never suggest doggy because I hate the repeated pulling out and sticking it straight back in creating a big amount of air up me, it starts to hurt! Luckily I do the whole GFE thing so pounding and doggy are rare 

This technique is high risk for condom splits. I enjoy doggy, and will work it into a session if it looks like he'll enjoy it, but discourage the porn star style pull out.

So far I've just taken it without complaint for fear of getting a bad review but I cried last week after an appointment. A guy with the build of a wrestler absolutely smashed me. Just couldn't go through that again.

That's really horrible Miss F.... like others have said you don't have to put up with that.

You're not there to be hurt, or to be forced to suffer, despite the fact that payment has changed hands. xx

 If you have explained to the client clearly that being pounded with full force is extremely painful for you then they are not allowed to do that. Continuing to ram you as hard as possible is not OK, in the same way that other aggressive physical acts (such as knocking you down or slapping you in the face) would also not be alright. I think most men are just over enthusiastic and don't realise  and would be mortified to know they had hurt you by accident. But for the proper bastards that want to "ruin" you without your permission you should have no hesitation about giving one warning and then leaving.

I want to reiterate that a bad review, particularly one complaining that you won't allow them to pound you silly, will not hurt you.

If you look like your photos, are friendly, and do the acts advertised for the full time, you won't get a bad reputation.

I'm with Curvy gal and a lot of others that said it; I tell them straight!
You shouldn't have to put up with anything you're not comfortable with, and certainly not with being hurt!
It's usually the younger ones (of course not all of them, I get some really nice ones too), but if they're getting too rough I'll tell them to take it easy  coz they're hurting me and so far it's always done the trick.
Be firm, set your boundaries and don't be afraid to speak your mind and put them in their place.
I prefer older clients and won't take bookings from disrespectful/rude/crude clients, young or old.
I'll tell them I don't take bookings like that, and if they want to learn some manners and try again they're welcome to..