Relevant: https://pastebin.com/QkMmbNxA

Useful if you get trolled on Gastlies? 70.07% to save any amount of time. 
Can Thrash turn 1 to save an additional ~1s, but run the risk of not getting 4 turn Thrash.

Time save/loss:
- 54.92% to save 1.5s.
- 10.77% to save 6.1s.
- 4.38% to save 0.6s.
- 22.31% to lose 4.4s.
- 7.62% to get trolled = rip (thrash disabled or sleep powder hit).
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CEALDON
- Normal Shop

LAVENDER
- Get Rare Candy.
- DON'T TEACH DRILL.
- Rocket 2: TB + Thrash (or Thrash x3-4)
	> Drowzee: (23/39) (Overall 1-hit Kill%: 65.7051%)

SILPH
- Teach Drill, Bike to Silph.
- Normal.

SAFARI
- Normal.

FUCHSIA GYM
- Koga: EQ x3, use Elixir #2 -> stall with X Acc if bought 11 -> stall with Bubblebeam.

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PROS                                Average         Best
- Skip extra menu (drill teach)     -1.0            -1.0
- Less OHKO Text (Rocket 2)         -0.7            -0.4
- Save turn on Koffing (TB crit)	-1.0			-6.0
- Thrashing about (Drowzee)			-0.8			-0.0
TOTAL                               -3.5            -7.4

CONS                                Average         Best
- Select TB							+0.2            +0.2
- Thrash windup (Koffing)           +1.1            +1.1
- Lose a turn on Drowzee			+3.9			+0.0
TOTAL                               +5.2            +1.3

NET                                 +1.7s           -6.1s

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RISK CALCULATION

Thunderbolt Crit: 0.164
- Thrash Kill: 0.657 -> 0.1077
- Thrash not Kill: 0.343
	> Drowzee no troll: 0.778 -> 0.0438
	> Drowzee troll: 0.222 -> 0.0125
	> (Take damage: 0.5 -> 0.0281)
	> (Confusion: 0.25 -> 0.0141)
Thunderbolt not Crit: 0.836
- Thrash Kill: 0.657 -> 0.5492
- Thrash not Kill: 0.343
	> Drowzee no troll: 0.778 -> 0.2231
	> Drowzee troll: 0.222 -> 0.0637
	> (Take damage: 0.5 -> 0.1433)
	> (Confusion: 0.25 -> 0.0717)

GOOD: 0.1077 + 0.0438 + 0.5492 + 0.2231 = 0.9238
BAD: 0.0125 + 0.0637 = 0.0762

SUMMARY:
- 92.38% to kill within 4 turns and no Drowzee troll.
- 70.07% to kill within 3 turns and no Drowzee troll.
- 54.92% to not crit Koffing and get Thrash range.
- 10.77% to crit Koffing and get Thrash range.
- 7.62% to miss thrash range and get hit by thrash disable or sleep powder.
- 17.14% to take damage from Drowzee, 8.58% for Confusion (0.429% to get confused and not hit through).