Blog Question: How long should I insure for?

I received this question overnight.
Hi Allan,
Do you have any documents, papers or a link to a website that I can use and possibly leave with clients, when discussing the Indemnity Period under a Business Interruption program??
Regards
Ray [surname and email provided]
I replied as follows:
Hi Ray,
There is a heap of material available. I would start with the section in the BI Explained section of BIcalculator.com under the heading: How Long Should I Insure for?
If you would like a slim booklet on Business Interruption then Mannings Guide to Interruption Insurance is the way to go, with Part 6 addressing how long to insure for. If you want a PDF version of the free book you can go http://www.lmigroup.com/documents/mannings%20guide%20to%20interruption%20insurance.pdf
Hope this helps.
Allan
Allan