Here's a shot with two camera stabilizers used simultaneously by one operator (me).
A Sennheiser in-ear system helped me to coordinate the movement of the stabilizer in my left hand. For this it was necessary to use a fast video transmitter with real-time transmission.
Single, continuous shot without repetition, without post stabilization.
I've tried several stabilizers (Glidecam, Steadicam, Chinese), but these were either hard to maneuver or impossible to control with one hand (some even with two hands..). The phase-detect autofocus of the EOS 70D usually worked well with the stabilizer in most shooting situations, but unfortunately at this type of dance it didn't work accurately (it wouldn't have worked even with an STM lens). Both cameras were in MF mode.
Mezdon HDSLR-4 stabiliser with EOS 5D Mark III
Canon 16-35mm f/2.8 lens @ 16mm
BON BW-100M HDMI wireless video transmission system
Mezdon HDSLR4 with EOS 70D
Tamron 28-75mm f/2.8 lens @ 34mm (54mm in 35mm format)
Sennheiser G3 wireless audio system