What a fabulous question! I haven’t had experience with this but I wonder about the same technique as a normal pool evac when there is no hoist which is a water stretcher lifted to the side and then onto same height bed. However I would think this was a multiple staff emergency only kind of technique? I personally remember climbing out of a birthing pool holding my newborn and thinking in my post-birth confused brain that it was pretty dodgy. Looking forward to others comments.