Hey that's super cool! But does it not seem that all the related videos show that trick being used only in Mississippi-style mud pits....? Wonder how that approach would work in sand. Seems like it would work pretty good!
*** Okay....can't keep myself from stating this "Captain Obvious" holy-crap-common-sense cautionary observation: ***
>> Wow, do ya wanna make sure to stay wayyyyy clear of a spinning tire that has one of those boards attached to it....dang, talk about snapped ankles if you're standing too close.... <<
Gonna keep that get-unstuck trick in the repertoire for sure.
Found this video about commercially-available "Truck Claws" (by virtue of YouTube playing more videos related to GAR's first video). These look like a great tool to have along to get unstuck! Super compact to store in your van. They show themselves extracting from axle-deep sand easily with 'em too. Way cool!