Sounds like what I discovered a few years ago. Each piece of my gear is covered by an individuall rider. I supply a written estimate of the replacement cost, along with the serial number and a photo(s) and they charge me 15% of the replacement cost. The coverage includes vandilism, theft, fire, flood, acts of G_D, even mysterious loss.
Expensive, YES!!!!
Worth it, YES!!!! (for me)
Ellery (Lowlife)