I think the spooning position while on your sides is the best for taking a large man, as you can't quite get as much penetration in that position, but it still lets the man have fun and go pretty hard most of the time. Missionary works well and it makes it easy to control how much of you she takes, but its hard for a guy to go nice and fast without giving a girl a cervix punch sometimes in that one. Anyways, EXPIRIMENT baby! There are limitless ways to do it, just try as many as you can, and eventually you'll find several that work best for you and your partner and use them the most. My ex and I did missionary, spoon and reverse cowgirl the most it seemed, but to be honest we were always trying to find new ways for him to stuff his meat in me lol!