Suggestions for multi-camera calibration

[DestroytheCity]

My team and I are using Anipose for 3D human pose estimation in a hallway with 8 cameras. Four cameras are on either side of the hallway and are oriented such that they are facing each other. As a result, it is difficult to have a single sided CharUco board in frame of all 8 cameras at once. We have been using a double sided board; however, the coordinates produced seem to be very hap-hazard. Has anyone had success using a similar setup?