Here's an application I've been exploring for the first three moves of Pinan sandan. Basically, a punch comes in and you block to the outside. The second punch comes in; you trap the first hand down and you block to the outside of the second arm. You now have his hands crossed in front of him and a twist or shove of his arms throws him.
In aikido, the throw is jujinage, here is some footage of the idea: https://www.youtube.com/watch?v=CTqCGnTEq4Y
The same concept is a basic technique in mantis kung fu, some footage starts around the 1:10 mark: https://www.youtube.com/watch?v=5XE4gSddlYI This version is less "elegant" but looks more practical. I really like the old guy in this one.
Note that your hands have to "stick" on the blocks. Not grab necessarily, but at least remain in contact.