400mm f/2.8 lens for a large gigapixel image
One of my friends who posters in the Nikonians Panorama Forum wants to use a 400mm f/2.8 lens to create a large gigapixel image. His Gigapan Epic Pro takes a lot of time to shoot the the necessary number of images. He said it could take two hours or more to capture the 100 or more images.
I know the M2 system is much faster than electronic pano heads, but the 400mm f/2.8 lens weighs 10 pounds. The weight limit on the M2 is 6.6 pounds.
What are his options for using a non-electronic pano head?