FYI, this unit is leveled by hydraulic levels extending from the base of the truck that take the vehicle suspension out of play. Those levelers literally lift the truck up on their own, so the body weight of the truck grounds the unit down to a very stable platform.
The hydraulic scissor lift of the truck is a Snorkle lift and is very robust too. I've had it up in 20 to 30 mile plus wind guests and very little movement at all. The commercial law enforcement version that this TerraHawk company makes is safety rated to be deployed in sustained wind conditions over 40 miles per hour.
As far as shooting game from a vehicle, in Texas it's legal so long as it is not on a public road, within your own ranch it is legal...however this is really more of a stationary elevated blind when you are shooting from it.