You cannot have two NFIP policies, but you could force place a private policy. If you need $200,000 and they have a $150,000 NFIP policy, you would force place a private policy for $200,000 with a $150,000 deductible.
That is if you can find a private insurer to do that.
Underinsured is the most difficult situation, as if you are unable to do that, then about your only other option is to call the loan.
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