In response to your question: A sign of strength occurs (SOS) in the right hand side of a trading range and has wider (think twice as wide or more) as the bars in the recent past with volume that sticks out on the chart, think in the top ten. The close is above mid-range.
You don't have to sit in front of the screen to see this on the daily chart because you should not buy it immediately anyway. Let it go up. Buy it only when it retraces and tests or nearly tests lower support on lower volume. The SOS says demand has proved itself and it tells you there is a trend change and it is safe to buy the dips. Right now it is only safe to sell the reactions.
Check out DRYS, a dry shipper. The Baltic rate ticked up and so all the shippers showed a sign of strength a couple weeks ago. But look what happened it retraced to the 1/2-way level of the SOS bar and may retrace all the way back down to the break out price, the bottom of the SOS bar. The point is to be patient.
SKUL will probably pop or drop on th earnings release. But why risk holding it thru that? If you want to gamble, play poker imo. Because, whether it goes up or down will have little to do with the content of the news but more on the positioning of the very biggest players. They will use whatever news comes out to move it their way. Seldom if ever is there "perfect" quarterly results. Besides, if it goes up with an SOS, just wait, even if it doesn't retrace into the SOS bar, it will eventually retrace and there'll be plenty of run left.
Another, but more risky, entry would be a low volume test of the high volume low, $6.55 with a stop just under it. By the same token if it closes under 6.55 on high volume, get out of the way, it'll go to $5. JMO