How to deal with potential sinkholes (Florida)?

[Cynthia B.]

Hello,

I own a home , it's insured .  Regular insurance coverage covers only if a sinkhole opens beneath my property and the house is basically condemned.

I would like added sinkhole coverage in order to get additional sinkhole endorsement I would need to get some sinkhole inspection. If this inspection fails I'm unlikely to get the added insurance. 

I'm assuming the added sinkhole coverage is in case a building sinks, is somewhat unstable , but not condemned. 

Now my questions are  what if this sinkhole inspection fails. If I ever want to sell the house am I forced to tell potential buyers for legal reasons?

In case a house does sink somewhat (not catastrophic) , does strengthening the building with pipes and cement help enough to prevent further sinking ? Because I've heard about someone doing this and they still heard cracking sounds etc. 

If I would ever need to add pipes and cement , in case of some sinking, and it doesn't help enough , then what do I do ?  Because I'm not sure my insurance would cover anything beyond a catastrophic collapse. 

Thanks so much for any answers, I'm a bit worried about this, but I'm sure I'm not the only one dealing with this :)