Hello List,
1) When I lie down sideways I do not use a pillow to elevate my head. I have experimented with a pillow - it feels very uncomfortable. I make a fist with my hand and rest my head on my fist, which must be elevating my head by about two inches, this leaves the space around my head free and open.
2) Alexander Semisupine: I no longer use this position. There is no mention of Semisupine in any of Alexander's writings.
Regards,
Selvaraj