Wheel chocks on the front of the dyno.......

[Sandaholic]

Well from my vantage point safely off to the side it didn't move a whole lot, but I will have a giant slice of no thanks on this stupidity. Took the pic after the runs were done. Sketchy.....

 

[Kick Start]

No straps?

 

[Joesixpack]

Well it had to have been strapped in the back. Likely a dual roll so you don't need a forward strap to keep it from rolling back.

 

[WI Huck]

That does not look right to me. The front needs to be strapped down to have pulling forces in both directions. You do not want the truck to move period. If the truck lunges back you could have a rear strap come loose. Straps on both sides keep each other tight.