When asked a question on “evolution” the conservative needs to answer, “I am glad you have given me a lead into the bigger issue of Federal control of local schools and the crushing of local family values.. I agree with you that eh Federal takeover of education has to cease and we will ask the Congress to pass legislation to bring this about.”
Gotcha’s always have an escape hatch to leads to the flaw.
Thinking of them on the fly is the hard part. Seeing as they are always the same, or at the very least in the same classe, candidates should be prepared for them
I don't claim to know how it should be done, but my take on it would be that they answer should make the questioner look stupid for asking it.