How to finish triangle against some people that are defending it very good could be a real challenge.
Here are two videos with techniques to deal with two common ways your opponent will counter your triangle choke.
The first one is about how to break your opponents defense grips.
And the second is video is control against the stack. There are few ideas and counter and the stack and h ere is of one of it. Chaing the in the triangle is very important so here is the way.