I would simply crate the dog next to the bed while you are working on training the dog to stay off the bed by rewarding the dog for going to his mat.
A leash and a collar will help a lot. Off the bed means off the bed. Reward him when he is off and on the ground. Leave the leash and collar on him so he is dragging int. Use the leash to get what you want. Use food tossed on the floor to get what you want. Don't make it a fight.
A leash and a collar will help a lot. Off the bed means off the bed. Reward him when he is off and on the ground. Leave the leash and collar on him so he is dragging int. Use the leash to get what you want. Use food tossed on the floor to get what you want. Don't make it a fight.