Plus size - Any Good Sex Positions?

My husband and I are both plus size.
I have a big bottom and he has a big belly. And he has an average sized penis.
We've tried from the back but my bottom is too big so he can't even reach, and I've tried getting on top of him in different position but my legs don't spread wide enough because he's also really wide from his legs (muscle).
Do you plus size ladies know any sex position we can try?
We've been on the regular him on top of me position and I want to give him something he can enjoy a lot more.