Dear Bob, "Mine is bigger than yours" per your statement.
Or another way to look at it "Maybe you're rocks are smaller than mine."

I've got 1/4" deep gouges in my Trail Armor 1/2" material. That would have almost worn through your 3/8" Bob.
yes Trail Armor is heavy, like a tank buttress. I think my 2 seater skid plate was 135 pounds shipped.
and Sometime, even 1/2" isn't enough.
I just noticed on my machine, I've actually cracked an inch or two of my HALF INCH thick trail armor A-arm Guards.
It's a minor crack, but anything inferior would of been a totaled guard or lower a-arm.
I'm really shocked how few people add A-arm guards, maybe it's cold out and their rocks are shrunken up.
Your Condom needs may vary for personal protection. My limited straps are ribbed for my pleasure.