Using movement tricks to reduce fall speed even slightly can avoid touching the sand. A Flatley style turnaround over the grapple block hole reduces fall speed some, but also needs a down back or a tiny jump.

Requires:

"canSuitlessMaridia"
{
  "or": [
    {
      "and": [
        "canFlatleyJump",
        {
          "or": [
            "canTrickyJump",
            "canDownBack"
          ]
        }
      ]
    },
    "canWalljump",
    "canResetFallSpeed"
  ]
}