Use the floating platform near the bottom-left of the room.

Exit condition:

{
  "leaveWithMockball": {
    "remoteRunway": {
      "length": 3,
      "openEnd": 2
    },
    "landingRunway": {
      "length": 1,
      "openEnd": 1
    },
    "minExtraRunSpeed": "$0.E"
  }
}