Sorry for the delay but here's how I use a paint bucket grid (
https://www.homedepot.ca/en/home/p.1...000120449.html) as a grill for my Big Buddy Heater. They're super cheap; I actually bought two but haven't used the second one yet.
Basically I flip it upside down, attach it to the top metal bar of the grill with the arms of the paint bucket grid, then slightly bend the arms of the paint bucket grid for a snugger fit. It comes off and on with ease but like I said before it can support the weight of most things I'd heat up. I do use foil on top to keep things tidy (hot dog grease, crumbs, etc.).
When transporting I remove the paint bucket grid and slide it along the back side of the heater in the carrying case made specifically for that heater.
Hope this helps!