Whilst everyone is focussing on the easiest way to produce a Manx IGI the real issue is surely how to produce the best (most accurate) Manx IGI. To achieve that the starting point needs to be the original records in the Manx Museum.
Ideally such a project should be a joint venture between the IOMFHS and Manx National Heritage. The first step would be for IOMFHS to start a dialogue with MNH with the aim that a Manx IGI once produced would be held by the Museum and available to researchers via the Internet.
I am aware that MNH does have plans to open up access to its historical records via the Internet so before going much further we also need to know what they are planning and the timescale