When to Use Side Spin in Pool — Practice Drills
A tool, not a default — and how to wield it
English is a tool, not a default
If Lesson 4.2 made English sound terrible, that's mostly correct: most beginners use English to compensate for poor pattern selection, and it makes them worse.
But English does specific things nothing else can do — and pros use small amounts of it on a large fraction of shots. The trick is knowing when.
When NOT to use English
Default to center hit for ~85% of shots. Specifically avoid English when:
- Long thin cuts — squerve uncertainty stacks; tiny speed errors = big miss
- Forced position shots where shape is already there — if 30°/90° rules give you the line, don't add a third variable
- You're early in your skill development — train cut, then follow/draw, only then English
Dr. Dave's direct quote: "English magnifies aim error via squirt and swerve, and is mostly used by intermediates to compensate for poor pattern selection."
- 85% of shots: center hit is correct
- Long thin cuts with English = highest miss rate
- English ≠ skill; pattern selection is the real skill
Running vs Check English on cushions
The legitimate uses of English live at the cushion — to widen or narrow the rebound angle for cue ball position.
- Running English: spin in the same direction as the cushion roll → rebound widens. CB travels further from the rail.
- Check English: spin opposing the rebound → rebound narrows / kills. CB stays closer to the rail or holds.
Magnitudes per Patrick Johnson's reference chart: at 1/3, 2/3, and 3/3 max spin, perpendicular kicks shift by approximately 1, 2, and 3 diamonds respectively.
- Running English widens cushion rebound (use to "open" the angle)
- Check English narrows / kills rebound (use to hold position)
- ~1, 2, 3 diamonds shift at 1/3, 2/3, 3/3 max spin
Gearing English (cancel cut-induced throw)
Recall from 4.2 that even without English, a moderate cut produces 3-5° of cut-induced throw on the OB. The OB drifts off the contact normal.
"Gearing" outside English — the specific amount of English that cancels CIT — restores the OB to the geometric line:
- ~40% maximum English at a 30° cut
- ~70% maximum English at a 60° cut
- Amount scales with cut angle
"Outside" = the side away from the cut (right English on a left-cut, left English on a right-cut).
Result: the OB goes exactly where the geometry says, with no throw correction needed in your aim. This is a pro-level adjustment used on shots requiring high precision — pots into tight pockets, frozen-rail OBs, etc.
- "Outside" = English on the away-side of the cut
- ~40% English at 30° cut cancels CIT exactly
- Pro use case: precision pots requiring no throw correction
When to use, when not
| Use case | Type | Why |
|---|---|---|
| CB needs to escape down a rail | Running E. | Widens rebound, opens angle |
| CB needs to die near the cushion | Check E. | Kills rebound |
| Precision pot, tight margin | Gearing outside | Cancels CIT exactly |
| Long thin cut, you're guessing | NONE — center | Squerve will eat your aim |
English is conceptual-only in this app for now (the simulator doesn't fully model squerve and throw). Future updates will add proper English physics.