I use my drift sock extensively and have it rigged on a free sliding chord loop that runs between midships and stern via a couple of clips. This enables me to control the angle of drift and also switch sides by simply un-clipping and repositioning. Some folks employ sophisticated pulley systems but I just run the chord through the clips and it works fine. I find that you don't need a lot of length - six feet seems to work for me and it not too much of a pain to haul in at the end of a drift.
When sight fishing, look over your shoulder from time to time, you never know who's behind you