Considering that;

1) Everyone but Althea, Esther, and Regina have close-to-short range weaponry the missed shots aren't a concern for most.

2) That there is bait (Leblanc) implies the intention to manipulate the Rocs into a predictable position to strike them.

And, again, retreating into unknown territory is dangerous if they come upon yet another monster and find themselves confronted on the ground and the sky. Avoiding fights may be all well and good but one mistake and you'll find everything you snuck passed is running to stab you in the back. Stay, fight, and you'll have relatively secured a point to organize and operate out of as they plan to capture the target monster.