Also, if you were to experience an issue while living there, you might have a hard time getting the insurance company to pay a second claim since you never corrected it the first time.
We have a disclosure form that is widely used in California that specifically asks if the homeowner has made any insurance claim or received any insurance payment whether the money was used to make repairs or not.
Seek professional advice from a Realtor in the area where the home is being sold for a definitive answer to your question.
Yes, you do have to disclose that you have a sinkhole in your home. You will have to disclose also that you've made an insurance claim and what it was for....that is for the state of GA. I just realized you are in the state of FL. I think you need to hear from agents in FL. I would monitor the sinkhole, if its truly in your home. You do not want anything structurally to happen to one of most people's largest assets. Good luck. And remember, it's always better to disclose thoroughly with an explanation than to get sued by a buyer!!