I may be able to help w/bike insurance
Sorry to hear that your agent has been less than helpful. I am a personal lines insurance broker in CA but, in general, all policies in the US are the same. Your bike should be covered under your personal property limit (minus your deductible) if it is stolen. You should be able to add an inland marine endorsement for "Sports equipment" to your policy (depending on which company you are with). I have been in contact with a broker in TX for another one of my clients so let me know if you'd like me to ask her &/or put you in contact with her : )