I like that Adam. That's even a different option of flipping the truck then Matt Dempsey posted on the thread.
P.S.- Mullet Adam > short hair Adam
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I think Igor Yakimov has a few entries to a Truck-like Calf-crush from the Turtle Position.
https://www.youtube.com/watch?v=kA0USMhDHjk
I think this is EXACTLY what you're looking for. Coach Herzog posted it on one of the other flipping the truck threads.
It's gotten higher percentage for me when I have my knee in and instead of pulling their ankle towards me with my other leg, I post my foot on their calf. This allows for the grapevining leg to enter unhindered at your convenience. Depending on whether you pull him back or roll forward (Ford/Dodge though I'm just being reminded of those names, I'm familiar with Desouza control), either way you're going to save yourself a lot of headaches by posting your foot and putting weight on his near calf rather than pulling it toward you or going for the grapevine immediately, which I recall Eddie saying in a MTS that it can often take too much time to get there. This detail blew it out of the water for me. The knee in is a battle you can for sure win. The books and MTS can probably give a better breakdown.