For Tripod Use...
If you want to shift the P1000's tripod mounting a bit forward (for better balance), you can use the ReallyRightStuff L84 Lens Plate. It has a anti-twist flange on the rear of the plate which, when fitted to the P1000, still allows movement of the camera's LCD.
I fits standard Arca Swiss heads/adapters. Cost at B&H was $55 US.