Quickly move next to the first set of speed blocks at the left end of the hole. Shoot a Wave shot, then just before it goes off screen, horizontally spark to the left to get through all the shot and speed blocks. A spin jump may be used to move horizontally into place much quicker.

Entrance condition:

{
  "comeInShinecharging": {
    "length": 2,
    "openEnd": 1
  }
}

Requires:

{
  "notable": "Reverse Shinespark"
}
"canWaterShineCharge"
"Wave"
"canShinechargeMovementComplex"
"canHorizontalShinespark"
{
  "shinespark": {
    "frames": 75,
    "excessFrames": 8
  }
}

Dev note: The number of usable tiles in room is dependent upon the length of the shinecharge; 2 unusable tiles seems to be reasonable.