Observing the daily price action with BTCUSD, I'm waiting for a pullback to the approx 50% level of the current range to consider a short scalp position. All trades are indended to start as a scalp and then transition into position management to maximize gains.
My deciding factor for holding the short will depend on the momentum at the given time.
Scaling down to small timeframes such as the 1 minute is best for the most precise entry position.
I may enter/exit, enter/exit, enter... and then hold once momentum is obvious.