Another difference between tandem and single-rotor helicopters is the relative indifference of the former to the wind direction in a hover/departure versus the need to be aware of it when flying the latter (less so in a Sikorsky than a Bell due to respective tail rotor control power provided). Of course, a tandem is equally inclined to be indifferent to heading the same way it's going in forward flight, to the point of preferring to be sideways. A tandem design also requires some thoughtfulness and caution with respect to the interaction of the cyclic and collective systems for pitch and height control. For example, a tandem lesson learned early on is that showing off with an aggressive pedal turn in a low hover might result in the rear rotor going into translation lift while the forward rotor has not, introducing a sudden nose-down pitch that the cyclic may not be able to counter fast enough with differential collective.