I used to fly with a guy in a Sabre 40 that deployed them in the flare on really short runways. Worked really well in that aircraft. A no-no in the 60.
There are as many TR techiniques as there are aircraft. Use what works best for yours.
In the 2000, there is a sw on the nose gear, so it has to be down.
I've had only one bucket open on that airplane way too many times.......