buy low (as in not now as it's between resistance points), wait for it to go up, as soon as it's struggling to beat a resistance point (there's several levels that tend to come back, look em up, over the last weeks it's been ranging between 8.8 and 12k), tether out and wait for btc to drop to the lower resistance point again.  sell tether for btc and repeat.

do note though that in the case btc breaks the resistance point and you tethered out before, you will be stuck with tether and will have to wait to be able to buy again.  i ussually wait until the trend has started which means i'm missing out on some percentages but the risk is smaller that way (it's still there obviously as i can not predict the market).  It's a slow proces as you only buy/sell once a week or so and if you're late it means you have to wait a cycle (or switch to altcoins)