heading hold, and really lock the tail, unless you give input to move the tail...wind, turbulence, or the normal wishy-washiness of helis won't move the tail --unless you command it to move...sooooo, imho, you should seriously consider a good heading hold gyro.
Hey Ken, you just totally sold me on the HH gyro. Just one question. Is it a straight swap from the stock to a HH gyro?? Or are there other adjustments that will have to be made to accomidate the new gyro??......Thanks.