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....