In this position the Drop Cannon is too wide to be played directly so we need to use the top cushion. The idea here is to gather the balls just below (pyramid side) of the red spot to leave a close direct Cannon. To do this we need to play with check side for a thick half ball contact.
If we catch the first object slightly thin we’ll usually leave a screw back Cannon needing to send the red in and out of baulk and back towards the top of the table. We should avoid this if possible.