I usually just crack a window with a screen over it. In a pinch you can just drop screen material over the door and close it. I will be making some window covers/screen this spring for a more permanent solution so I dont forget then at home. My awning helps with rain if I have a window open. And I do want to create a large screen for cargo area since I cook out the back. Bugs have never been a he issue, yet, but I would something just in case.

Onyx is the same as Gaia but I think Gaia has more locations maybe. But overall Onyx is probably better for mapping. I actually use either very little since most of my custom stuff is in Google which I overlay into Avenza or offline maps, etc. But it is always best to have multiple methods of map access on hand when one ends up not working well in an area.

 

These window inserts are made for purpose - if you don't mind spending the $

https://www.ebay.com/itm/112256942451