Any diagrams for a solid engine stand?

[Triple J Graffis]

I got a rolling stand for my 93 Suzuki 85hp 2 stroke outboard. You can find it in my other thread in some of the latest photos. It sits on the stand just fine, but I want to get the motor running and can not trust that the stand won't tip over when it does. Anyone have any good instructions on how to build a sturdy stand that can hold this motor while I work on it and test run it?

Additionally, Is there a way to modify or enhance my current stand to help make sure it doesn't tip? I have a metal saw horse with wooden beams on top. Was thinking on screwing the beams into the bottom of the engine stand boards with 3 inch screws to give it added support.