How do I rent a car if I'm under 21 and don't have full coverage insurance?

Question by ougner: How do I rent a car if I'm under 21 and don't have full coverage insurance?
I am planning a trip and need to rent a car at my destination. I have several car companies that are willing to rent a car to me, though I'm 19, but they require full coverage car insurance, which makes sense, but the problem is I just have PLPD insurance. Is there a way I can temporarily purchase full coverage insurance from my car insurance company or what other options do I have for renting this

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