I'm a pretty big guy but I'm light for my weight. I shoot a lot of low levels to compensate for that, but I have trouble getting to the legs off the tie. I wrestle in the 215 weight class and when I watch the successful people in my weight, they are getting to a lot of high singles/snatch singles right off of the tie. I've been working my Russian using the Mocco Russian series, but I haven't had much success with it when we go live in practice (then again, I really started looking at it in depth just a week ago).
So any advice for getting to the legs off a tie for a big guy (and subsequently avoiding your opponent's sprawl)?