I've got a bed where I can move the head part, kind of like a hospital bed. It doesn't help, sadly. I'm thinking I'd need to be fairly incapable of moving to sleep on my back full through a night. Last time I managed was in an actual hospital bed with a tube in each arm and one up my dick, so I'd prefer not to resort to those methods to stop me being a restless sleeper. I will have to find a solution though, I'm not getting any younger so maybe smart bed might be a sensible option or some memory foam thingy.