Hey, two questions

First, for an arm bar I've been taught to get one of the arms, wrist control, circle the head and sit/arch into him. The problem is that as the top guy this position is extremely uncomfortable to me (shoulder feels like it's getting twisted up), and much more importantly, my grip on the wrist in this position is dumb easy to break out of after, which is the "whole move". Is there some way you're supposed to do it that prevents this? Also, are there other things I can do from the armbar? I have tried I think it's called reinforced armbar, where I reach under and grab the wrist of the arm being barred and try to tilt. I can do double bars and reverse bar arm pretty good. This is a bit important to me as when breaking a guy down I often get into an armbar without really trying, reaching around his arm and pulling it in if arm chop isn't working, and it would be a shame if I just have to let it go whenever i get it.

Second, what is the navy/navy ride and how do you do it?