#1 nothing more annoying that seeing a plane with 1/2 a wing and all shot up to hell still flying at full speed. time to coad things like this. hydraulics hits and all kinds of things go down or hard to control in your plane.
semp
They don't. Only one or two planes can actually fly nearly straight and level with half a wing (depending on which one) due to their torque balancing it out/trim. All the others, there has to be some sort of rudder work involved or else the plane flips. And when you use rudder, your plane is not "streamlined" against the wind/air. Your plane is slightly angled so that the airstream impacts the side of the plane, creating drag.
Only plane that I ever had zero problems flying straight and level with half a wing was the F4U-4 (a little trim and it was flying straight and level), Tempest (again, massive torque and little trim did the trick), and Ki-84 (I don't know why, torque is little compared to the other two, but again, bit of trim solved it).