Hi Ellen,
I have used bed rope ladders for bariatric patients and definitely recommend them. The more he can do himself the better. They often work better than a monkey bar because the angle of pull is better.
Also I wonder if he can manage his leg himself with a leg lifter (or a belt or towel if you don’t have a leg lifter). If not, the limb sling is worth trying – the problem with that is he is always dependent on someone else, but maybe he is at that stage anyway.
Good luck
