This presumes your opponent is a little bit slicker and tries to take your back by grabbing your "trail leg" during the floating pass. Like the "El Gato" variation, "The Trade" relies on you realizing what your opponent is trying to do before he or she can accomplish it. I find this variation to work extremely well against brown and black belts.

Note: you absolutely must have "The Trade" down pat if you're going to work on catching the trail arm, and it's really helpful for Kimura takedowns.