Here's some of the velro going on to the grill:
I did add some more velcro at the tips and left and right edges. Might come back later with a more complete picture of that.
And here's the finished product (for now)!
I might end up redoing the middle and top one just so they follow the shape more accurately, but they doesn't look terrible from several feet away.
It's a pretty warm day here, ~88 degrees F, and the engine temperature seems quite fine so far.
The blocks didn't fly off up to 50 mph. We have some pretty strong winds from all directions here on the NWA plateau, so we'll see if they hold up in cross winds. I'm only a little concerned due to the grill's honeycomb structure not giving a lot of sticking surface. I did have to reposition one strip and it was not easy to pull it off of the grill so hopefully the adhesive is strong long term. There was also zero residue so that's hopeful for if/when the cover is not needed/wanted.