Quote from Spectre2007:
you can average, as long as your unrealized loss doesn't exceed one of:
1) daily income
2) weekly income
3) monthly income
calculate what you make on average per day.. its easy to come back from a daily loss, but imagine how long 1 position loss going against you a months amount will take....well a month..
a hard stop could be a weekly loss. A weeks loss can be relatively easy to come back from... but a months loss can be demoralizing, especially if you need the income.
you don't want to be fighting a uphill battle, if your losses exceed the longer timeframes..