Overloading the PLMs can be done with as few as 2 Power Bombs if they are placed precisely. Place them two ledges above the item - to the left of the morph tunnel item. It is important that they are placed on either of the flat tiles, not the sloped tile on the right. Samus can use the second Power Bomb to Crystal Flash to have enough Energy to take a crab hit or to get some Reserve Energy, but then she will not be able to use X-Ray to exit G-Mode, and will require a Reserve Trigger. If Samus uses the first Power Bomb to Crystal Flash, she is no longer able to place a second. Samus then needs to jump into the speed-locked item and hit the crab to trigger Reserves and exit G-Mode. This can be done with HiJump, Gravity, Spring Ball, or Ice. Turn around while inside the item to collect it.

Requires:

"canEnterGMode"
{
  "notable": "G-Mode Overload Speed Blocks then use Global Crab"
}
"canBePatient"
"h_canNavigateUnderwater"
"h_canArtificialMorphCrystalFlash"
{
  "or": [
    "h_canArtificialMorphPowerBomb",
    {
      "and": [
        {
          "itemNotCollectedAtNode": 7
        },
        "canRiskPermanentLossOfAccess"
      ]
    }
  ]
}
{
  "or": [
    "HiJump",
    "Gravity",
    "canSpringBallJumpMidAir",
    {
      "and": [
        "canCrouchJump",
        "canTrickyUseFrozenEnemies"
      ]
    }
  ]
}
{
  "autoReserveTrigger": {}
}