ahahaahaha! lmao :D!!!! my apologies, i thought u meant not to fast land like that :) ahahahaha ! :D chimneys are small enough and choppers with wheel wont land on them :D
if you use autohover, the helicopter will go to the location you activated the autohover. It's good to use wasd+q/e keys to maintain a small stability.
you can stop it from going backwards by enabling and disabling the autohover so you reset the starting position. also have in mind the rotor...