Reflux Positioning

Has anyone tried one of those pillows Medslant is supposed to help with acid reflux?
I have tried using several pillows position ways and never worked for me. My bed is not one that lends itself to looking up the blocks. I have to find a way to keep your head high when I sleep. I do not want sleep in my chair!
My father has a hiatal hernia and reflux and has been sleeping with a wedge of foam "that was a medical doctor at a local pharmacy years and has helped tremendously. I recently had abdominal surgery and is not able to sit alone in a flat and ended up sleeping on it for two months and really did not feel uncomfortable or difficult to adjust. I check out local sources and see if your doctor can get a Rx to buy one because if you DME is covered by a plan or flex your insurance might cover part or all of the charges rather than ordering online. And it might be cheaper to buy locally and not pay shipping.
Side Lying Bottle Feeding of The Premature Infant