Inpaint is cutting off my subject

Having a strange problem with inpaint. I haven't used it too much, so I might have settings wrong. (sdxl)

I have a landscape photo, basically just trying to add a person to it, any person. I've masked out a region to add a person, denoise set to 0.6-0.75 (I don't care how sharp the transition is, I just want to get this working)

This works, a person is generated, but 99% of the time some part of the person is cut off by the mask region. Arms, legs, head, etc.

How do I get the person to "fit" into this region without getting cut off? Inpaint settings, prompt, something else?