I start the rope climb seated on the floor with my legs in a straddle (I only have about 12 feet of rope to work with) and when I climb I fully extend my arm to reach up and grab the rope. In the video, the guy performing the rope climb is making relatively short reaches up with each arm and they're mostly still bent around 90 degrees.
Should I be reaching up with a fully extended arm or should I take shorter "steps" up the rope with my arms?