I've had very mixed results using trailing stops in terms of
swing trading.
Specifically, we've found that trailing stops takes us out of winners way too early. The "noise" and natural ebb and flow of price action will do it to you every time.
We will model 30 days of data on-the-run, and set our stop-loss and profit targets according to that modeled trading range. And of course, when we take a profit the market nearly always continues - but that's trading. You take your piece out of the market, then patiently and selectively look for your next opportunity. Perfection is not possible with trading. You take the very best risk vs reward you can find.
YMMV, and I wish everyone good fortune.
Spreads, micro futures, and small blocks of equities - use smaller risk sizing and try to swing trade. IMO for 90 percent of the traders out there you will build account equity faster than intraday scalping.
If nothing else - just look at what you're spending on commissions and exchange fees with the scalping.