Jump into the respawning shot block. It helps significantly to aim down to get trapped into the block. A normalized method to set this up is to shoot the block then immediately perform 5 full-height jumps.

Requires:

{"obstaclesCleared": ["B"]},
{"obstaclesNotCleared": ["A"]},
{"noBlueSuit": {}},
{"heatFrames": 600},
"canJumpIntoRespawningBlock",
{"or": [
  {"heatFrames": 900},
  {"and": [
    "canInsaneJump",
    "canComplexCarryFlashSuit"
  ]}
]}

Dev note: The 900 heat frame option gives two leniency attempts. This is likely only useful to avoid a crouch jump and preserve a flash suit. This is not needed on strats that go directly from 9 to 2, because they require a crouch jump or X-ray.