Make sure you have 1 drone lined up with the gas (either going left or right in a straight line).
(Never let go of shift).
Hold SHIFT click your drone (it should deselect the drone). Click your drone again. Highlighting him.
Tell the drone to build a gas with your mouse. As soon as you give him that order, SPAM RIGHT CLICK to your destination. Try to get the message "Unit waypoint list is full".
Your drone will come to a complete stop beside the gas. As soon as he comes to a complete stop release SHIFT BUT, KEEP RIGHT CLICKING.
When the drone is on top of the gas (the millisecond away from when he builds it) stop right clicking and enjoy.
If done properly, your drones tail should keep wiggling and appear to be flying straight to the destination. You can however interrupt his destination if you feel he's floated far enough.