There are two other “pods” that I use in my photography, the Really Right Stuff Ground Pod and the Visual Echoe’s Panning Plate. When getting down with the big lens matters, these might just be perfect for you.
Moose Peterson Video Productions
The fun of flying air to air with a warbird is one of the greatest thrills I know! Here's a video and stills of my latest with the P-38 from Planes of Fame