Acceleration Helicopter Mission Problems

Personally, I thought the Secret Transport (I can't remember its real name) mission was the hardest, only because whenever I approached Sandia Crest, the load would fly over the helo and break off, even if I was only going 20KTS. The hardest mission skill-wise was probably the B-58 recovery mission. I have little problem using the hoist, but I have a hard time flying slow enough that the loads won't break off.