Does anyone use a skateboard attachment with a BOB Revolution? We are looking int these two: BuggyBoard (http://www.buggyboard.info/buggyboard-mini/bob-revolution) or Orbit sidekick (http://www.orbitbaby.com/products/sidekick-stroller-board). My daughter will be 4 when we'll be using the stroller for baby 2, she's a good walker, but I want to have options for her to ride along too.