When the conditions are right, such a clear blue sky, your 360-degree image may contain a shadow of the camera and tripod. Therefore, you should try to place the camera and tripod to avoid the shadow, minimize the shadow, or at least make the shadow’s removal easy.
In the first image taken at Middleton Place, the camera and tripod shadow is hidden in the shadows of the trees- no post-processing is required.
For the images of the United States Custom House, the sky was clear and the Sun was high in the sky. There were no obvious places to hide the shadow; however, I knew it would be relatively easy to remove the shadow with photoshop.
In summary, when placing the camera and tripod the goal is to minimize the post-processing. However, do not sacrifice the image’s perspective because the camera and tripod placement are not ideal.