"Reciprocal Insurance" for camp

 I have an odd request

I have been hosting a full contact team camp the last few years here

Insurance has never been a problem in the past but for some reason the district is really trying to make us work harder than we should for it this year

We are paying for insurance for every participant in the camp (player, coach, volunteers, even the spectators watching)
everyone is covered

our district is saying we should get "reciprocal insurance" where we cover everyone, and all of the people that come to cmap have to come with their own insurance coverage for camp as well... essentially covered twice

I am trying to show them that NO ONE that runs a camp does this

If any of you have ever run any type of camp before, and HAVE NOT required reciprocal insurance can you please either leave me your email address or PM it to me... I have to compile a list of contacts to give to my AD... he will email you just to verify that other schools/districts do not do this

Thanks and I appreciate any help I might get from you guys