Actually I consistently use the fan blowing inward when cooking.
With the window above the stove open, cooking odors are carried out nicely leaving the interior clean and odor free.
We have a Scamp13D front bath which is veritably festooned on the roof. The Fantastic fan is placed behind the A/C, over the bed. I think it works best in that location, whether you are using it for intake or exhaust.
Any placement will work well on exhaust to draw air in through the
windows. Properly installed the fan adds rigidity and so reasonable proximity to other roof openings is not a problem.
Here are a few photos of the most recent installation over the bed which I did earlier this year....