Artemis BJJ (PHNX Fitness), Can Sönmez, Bristol, UK - 20/11/2014
The drawback to the low mount is that there aren't many submissions from there: the ezequiel is one of the few high percentage attacks. In terms of their defence, they are mostly going to be trying to unhook your feet and digging their elbows under your knees, so you'll be battling to keep those in place.
To attack, you're better off climbing further up, into high mount. Again, you need to worry about their hips. To control them, put your feet by their bum, tucking your toes underneath: Roger Gracie points this out as of particular importance. In what you might call 'middle' mount where you're still over their hips, Saulo suggests that you 'ride' their bridges, like you were on a horse. Lean back, then as they bridge, lift up: you’re aiming to move with their hips, rather than just leaving a big space. So, this takes a good understanding of timing.
He also recommends against leaning forward, as he feels that gives them more space and leverage to escape. Hence why he leans back instead. Experiment, seeing how holding the head works for you versus leaning back. I think Saulo’s method requires more experience, and personally I feel unstable there, but as ever, I want to offer students choice whenever possible.
The danger of leaning back is when you're facing somebody with flexibility and/or long limbs. They might be able reach their legs over to kick into your armpits, either sliding out through your legs or pushing your over. You must control their hips with your feet, to prevent them from bending their body. Swimming the arms through might help you out here, this time against their legs, depending on how they attack. If they do get their feet in place, I generally grab on the back of their collar, stay really low, then attempt to gradually work my hips back to flatten them out: that worked for me last time it happened.
Another option is to move off their hips, shifting into an even higher mount. Gradually walk your knees into their armpits (pulling on the top of their head may help, which will also stop them wriggling back out) being careful of the elbows. If they start to work an elbow into your thigh, twist to one side and raise that knee. Pull their arm up with whatever you can grab, then reinsert your knee. I've seen Rob S teach grabbing their sleeve with your opposite hand, while Mauricio likes to grab the elbow with their opposite hand and Felipe essentially shifts to technical mount for a moment.
Teaching Notes: Unlike yesterday I went with the shoulder push method this time, which worked pretty well. I haven't been talking about the technical mount shift much, though I did include it as a drill. Interesting, a problem was that some people who were new to the drill weren't turning enough to make it effective. That's worth emphasising next time. Other than that, class went pretty much how expected. This is solidifying into a reliable class structure: I think I will probably teach the ezequiel separately, as the shoulder push works really well and even better, it's simple. Yay for lack of complexity! :D