The problem of getting the speed off can be addressed by racking the aircraft round in constant tight turns, slowly washing off the airspeed. The idea is that at a suitable point you can level the aircraft and you will have a brief period at low speed before the fixed pitch will cause the aircraft to climb again or accelerate. This is the point at which use of the throttle can control a descent [need to be careful with tail rotor authority]. Obviously you'd need to practice this several times at altitude before committing yourself to the manoeuvre at low level.