I'm thinking that your wording is the most important.
If you put in a claim stating the wind blew the dumpster into the car, it should be a Comprehensive claim. This may carry a lower deductible (hopefully for you) or someone maliciously pushed it into the car its vandalism and still a comp claim.
The difference on your policy is very minimal to have a low comp deductible b/c most claims are collision.
I have a lot of experience with Travelers and can guide you if you like.