Good for you more do need to know it's rape and they can be reported to police and possibly end up in prison. So many clients seem to think it's no big deal and they can do as they like.
You are more vulnerable on the doggy position so definately need to be on your guard more.
I'd not heard of "stealthing" either, although I usually say it to my kid when I creep up on him in the kitchen to monitor his snacking, "stealth mummy".
Moreso now with concerns over lack of support from the police & potential fines, if they go into this second lockdown. This is my biggest fear at the moment, lack of police protection & what I would do to someone who tries anything aggressive.
I'd have something on the profile like "all consumables are provided, just bring yourself along".
Yes as EG says, always have your hand at the ready in doggy.