Pause immediately on room entry, and bounce just before Samus would roll off the runway. Unequip Spring Ball, then pause again as soon as possible and re-equip Spring Ball.

In the case of entering with minimal extra run speed ($1.7): The bounce should be done on the last possible frame; otherwise the timing for the first pause is frame-perfect (with a 2-frame window for the second pause). With a first-frame pause and last-frame bounce, the second pause has a 4-frame window. With a second-frame pause and last-frame bounce, the second pause has a 3-frame window. With a third-frame pause and last-frame bounce, the second pause is frame-perfect.

Entrance condition:

{
  "comeInWithMockball": {
    "speedBooster": true,
    "remoteAndLandingMinTiles": [
      [
        4,
        0
      ]
    ]
  }
}

Requires:

"canSpringBallBounce"
"canSpringFling"
"canInsaneJump"
"canBeVeryPatient"
{
  "heatFrames": 145
}