I used a switch rod on a lake, also a single hand. A lot of the time, I used single-hand spey casting to get my fly out the furthest because there is no back casting room at times. Even on the rivers, when I dry fly fish, I have no backcast room. I find myself false casting left and right, to dry off the fly, and into a snake roll and back out to dead drift the dry fly.
I was also using a 7wt 11' switch with a wulff ambush line and an intermediate poly leader setup, throwing clowsers and such on the lake. Worked well.