Sometimes a scalp works instantly — price rockets to your target almost as soon as you're in. It's a good problem, but it's still a decision: take the fast profit, or trail for more? Defaulting to either blindly leaves money (or gains) on the table. The regime, the momentum, and the clock decide.

When to take it

Bank it fast when you're in a reversion regime (positive gamma / range day), where a quick pop to target is likely to revert — the move that got you there is the move that gives it back. Take it when target was a strong level (a wall, the range edge) likely to hold, and when the clock is late and a fast win is a gift. In chop, a fast target hit is often the whole move — take it.

When to trail it

Let it run when you're in a momentum regime (negative gamma / trend day), where a fast move to target is often the start of a bigger one, not the end. Scale out a piece at target and trail the rest with a stop below the last higher low — you bank a win and keep exposure to a runner, risk-free on the remainder.

In a fade regime, a fast target is a gift — take it. In a trend regime, it's a head start — scale and trail. The regime tells you which.

The default that never loses

If you're unsure, take partial profit and trail the rest — it's the best-of-both that removes the regret either way: you banked something, and you kept a runner. What you should never do is move your target further out with no plan just because it's working (greed) or hold a fast winner into a reversion that erases it. Decide the scale-and-trail plan before you enter, and place the orders that carry it out — so a fast winner is managed by rule, not by adrenaline.