He has to sleep with his head elevated and winds up sliding down the bed. So I need one that will provide enough coverage to protect him from falling out. But I also need one that he can manipulate easily due to neuropathy and arthritis in his hands. We found one that I thought would work, but it turns out to have 2 buttons he has to pull out and maneuver. Very frustrating at night when he needs to get to the bathroom quickly. Anybody else ever face this or have some suggestions? I'm beginning to think that we need to just invest in a better bed.