A Fixed Target Against a Trailing Exit

Once a breakout is working, the question becomes how to let go of it. There are two basic machines available. One is an order placed at a level in advance, which waits and fills if price arrives. The other follows price at a distance and closes the trade when price gives back some agreed amount. They produce genuinely different distributions of results from the same entries, and the choice is worth making deliberately rather than inheriting from whoever taught you the setup.
The Resting Order Is a Decision Already Made

A fixed exit is settled before the trade is live. It fills or it does not, and no judgement is required while the position is open, which is its largest practical advantage. The moments when a discretionary exit decision has to be made are exactly the moments when the trader is least equipped to make one, with the position moving and attention narrowed.
It also caps the trade. A breakout that turns into the largest move of the month fills the same order as one that limps to the level and stops. Everything beyond that point belongs to somebody else. For a method whose results come from consistency rather than from occasional outliers, that cap is a fair price. For a method that depends on the rare large move to pay for everything else, it is not.
The Trailing Order Pays a Toll on Every Trade

A trailing exit does not cap anything, which is the entire attraction. If a move extends beyond anything you would have targeted, the trailing order stays with it. The cost is that it never sells at the best price, by construction. Every trade closed by a trail gives back the trail distance, and that giveback is charged on winners and stalls alike.
The size of the trail is where the method lives or dies. A tight trail closes positions during the ordinary pullbacks that occur inside healthy moves, converting extended trades into small ones. A loose trail survives those pullbacks and hands back a large slice of the gain on the trades that do reverse for good. There is no setting that avoids both, only settings that choose which one to suffer.
What Your Winners Look Like Decides This
The honest way to choose is to look at how the winning trades in your own record actually unfolded. If most of them reached a similar distance and then stalled or reversed, the extension a trail is designed to capture is not present, and the trail is simply a worse version of a fixed target. If a handful of them ran far past anything you would have set as a target, a fixed exit has been quietly truncating the trades that mattered.
This is not a question anyone can answer for you from theory, because it depends on the instrument, the session length, and the entry rule. It is answerable from a few dozen recorded trades with a note about the furthest price reached before the trade ended, which is a small amount of bookkeeping for a decision this structural.
Combinations and Their Traps
Many traders use both, placing a fixed target and a trail together and letting whichever triggers first do the work. That is coherent if the trail is loose enough that it only ever acts on trades that turn before the target, and incoherent if the trail is tight enough to close most trades before the target is ever approached, in which case the target is decoration.
Another common arrangement is to trail only after a fixed distance has been reached, leaving a static stop in place until then. This keeps the trail out of the noisy early phase of a breakout, when a retest of the range edge is likely and a tight following order would be caught by it. The logic is sound. The detail that decides whether it works is where the switch happens, and that is worth choosing from the record rather than from a round number that sounded reasonable.
Living With the Choice
Whichever machine you use will produce trades that make you regret it. The fixed target will fill on a day when price ran twice as far afterwards. The trail will hand back a large portion of a good move on a day when a fixed target would have caught the high cleanly. Both of those are the method working as designed, not evidence of a mistake.
The failure worth avoiding is switching between them based on the last painful outcome, which guarantees using the fixed target on the extended days and the trail on the reversal days. Pick the machine that matches how your winners behave, write it down, and let the regret happen on schedule.