It’s also a great choke for both gi and no gi. A nice head-snap is also a great way to setup the anaconda choke. The anaconda is normally seen when someone takes a bad shot and gets flattened out, but can easily be applied anytime you scramble and get over top of your opponent’s head. The second they reach their arm in and try to get the underhook shoot your hand under the armpit and apply the d’arce. When you are in side-control, wait for your opponent to “ do the correct thing” and get their under-hook. There are transitions into the d’arce when your opponent is in the “turtle” position, but it’s not as common. The d’arce choke is most commonly setup while you are passing your opponent’s guard and transitioning into side control.
It’s not choke that requires too much flexibility either. To apply either of these submissions, you must identify which position each one is best suited for. A submission is only as good as the setup.