Yeah.....I have the same problem. I can't really do anything aside from missionary because of leg cramps. However, since doing Pilates, my legs are getting stronger so maybe I could try something else.

****I hope this isn't TMI but....the guy I was in a relationship with before the one I'm in now liked different positions. One that we found that I actually liked was um...how to put this nicely....standing up with me bent over the arm of the couch, and using rear entry. It was definitely different and it was actually pretty enjoyable, and since my legs were just straight, they didn't cramp up. So.....maybe that could be fun tee hee. K I can't believe I posted THAT hahaha!!!!!

Edited to clarify that "rear entry" doesn't mean the nasty thing that might come to mind when I say rear....I don't know how to say it ummmm, still going in the proper place but from the rear, um yeah haha!!!!