I know that a lot of people are recommending Walter P. Dolle (http://www.wpdolle.com) for insuring your rig.
I am about to buy a used Zephyr and I was wondering if I should use this insurance or another since it's not a big rig.
Also, does having a workshop certificate helps with the insurance? (I did the 2 days Tiffen one in NYC last year)
Thanks for your help.