A technique that works in the Huey Simulator (or AB205 etc) following a loss of drive to the tail rotor:
1. Enter auto and roll throttle off to reduce tendency to spin to a minimum
2. Establish fairly fast auto to get some benefit from the fin
3. During auto gently re apply throttle
4. during the flare as the speed reduces and you start to pitch pull, the aircraft will begin to yaw due to frictional torque produced - at that stage start rolling off the throttle and that will help to keep straight.
Don't know if this is a "works for all" technique but it works on the Huey so my guess is it might work on 206 and other Bells.
Any one have use of a 206 sim to give it a go? Please let us know the results.