I still like my homeowner's insurance idea.
Yeah except not everyone has homeowner's insurance.
1. can he get a refund on his apple care?
2. if he takes it to Apple store - and shows it to them working fine - but just dented - can they make note of his file so in the future if the logic board goes - it's on fine that maybe the dent was not the issue cuz it was working fine while dented?
3. if he gets it repaired under homeowner - is there any record that apple can see what repairs were done and why?
1) Yes you can get a prorated refund.
2) They will probably note that he dropped it, nothing else.
3) As long as he gets it repaired by an authorized service technician, Apple won't care.