Place bombs against the speed blocks until they are overloaded. With a slow ascent, such as with Spring Ball and Ice, the crab will need to circle the entire room, it is possible to use a Super when it passes the speed blocks to speed this up significantly.

Requires:

"canComplexGMode"
{
  "notable": "G-Mode Overload Speed Blocks then use Global Crab"
}
"h_useMorphBombs"
"h_navigateUnderwater"
{
  "or": [
    "canGravityJump",
    {
      "and": [
        "Gravity",
        "canWalljump"
      ]
    },
    {
      "and": [
        "HiJump",
        {
          "or": [
            "canSpringBallJumpMidAir",
            {
              "and": [
                {
                  "notable": "Underwater Walljumps"
                },
                "canUnderwaterWalljump"
              ]
            }
          ]
        }
      ]
    },
    {
      "and": [
        "canTrickyUseFrozenEnemies",
        {
          "or": [
            "HiJump",
            "Gravity",
            "h_maxHeightSpringBallJump"
          ]
        }
      ]
    }
  ]
}
{
  "or": [
    {
      "and": [
        "Gravity",
        "h_useSpringBall"
      ]
    },
    {
      "and": [
        "HiJump",
        "h_useSpringBall"
      ]
    },
    {
      "and": [
        "Gravity",
        "canCeilingBombJump"
      ]
    },
    "canBeVeryPatient"
  ]
}