You'd have to be careful with this trade and monitor it, step by step ( you should be doing that for all trades anyway ).
You could hold until trade hits yellow line ( around 1.24 ). The trendline I've drawn isnt very accurate so it would have to be monitored for how high it decides to rise.
Once it hits a High and starts to fall, you could hit a short and ride...
CADCHF 4h Short
Possible trade falling to CADCHF resistance. It might be a bit jumpy so you may want to monitor it, in case it swings back up.
Once it starts to run, you can walk away, grab a surfboard and go have a surf :)