I just picked up a Canon 400 2.8 IS. Right now, I am planning to use it with a Winberley Sidekick mounted on a Vanguard head. I was going to pick up a Wimberley plate for the lens, but they don't make one - only the replacement foot, which renders the foot useless for carrying.
I know RRS makes a replacement foot and plate, but I'm not sure if it is truly compatible with the Sidekick.
Any other options?

