A kind of modified butterfly sweep to escape the mont (could be used in half guard too I guess).

Here are 5 ways to counter an opponent who holds their arms around your body when you attempt the triangle choke. Demonstration is by Chris Wright-Martell, Purple Belt in Brazilian Jiu-Jitsu under Roy Harris. (Partner is Meagin Sheehan, Blue Belt under Roy Harris). Filmed at Modern Self-Defense...

A toe-hold from under the mount by roy harris

Insert your knee and push back to get the heelhook by roy harris bjj

Another variation on the footdrag escape by roy harris bjj

How to escape the mount by doing a kind of low single leg takedown from behind (don't get triangled !) by roy harris bjj

A kind of modified butterfly sweep to escape the mont (could be used in half guard too I guess) by roy harris bjj

Roy Harris shows how to escape the mount with different varations on the foot drag bjj

Same as the foot lift, but you pull the foot to torque the knee instead of getting the half guard back