Springing POA comes into effect when the principle is no longer confident to handle their affaires. Read the POA and see if a doctors note is needed to prove incompetence. Sometimes its two doctor's.
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The danger in a springing POA is when does it become effective? The document must be very specific about when it is activated. The principal, the one granting the POA, might still be competent but needs help in paying bills, or making calls on his behalf. With a springing POA this might not be a reason to activate it. Also, it would most likely require a doctor's certification of his competence. I would prefer a general durable POA which becomes effective when it is signed. No doctor, no conditions, other than both the agent and the principal agree to it.
Being more specific will help posters respond to your concerns. Could you tell us more about the situation?
If this doesn't answer your question, we need more info.