Or just build the fire upwind and enjoy the shenanigans.They can shoot from inside. Those outside can use tower shields for total cover, terrain features, stealth etc. You don't need to make circle around very brim of the hut. You make one larger so more smoke comes. Or you come to the brink, burrow under the rim, and throw smoke bomb inside ( in 2014 version at least).
I did that during a training exercise (smoke, no fire).
"I told you not to use the same route to your LP/OP every time" laughs in instructor...