Thanks. Here's the problem in a nutshell:
1. Bike is registered to me in Ireland at an Irish address, where it is stored when I am not riding it.
2. I have a California driving license and an International Driving Permit, but not an EU license.
3. EU countries and EU insurers want me to have an EU license which is difficult to get in a limited amount of time.
Maybe I should re-register the bike in California, insure it here in California and get Green Card inusrance for it when I ride it in the EU. Problems: this Honda is not sold in the US, so the California authorities want to inspect the bike.
60-90 days of coverage at a time or per year is fine. The rest of the time the bike is in storage.