It's a great boat. Keep it. Before test "coring" the transom, check for crazing in the gelcoat at the corners of the transom motor cutout. Then, trim the motor most of the way down, and then stand on the cavitation plate and bounce your weight up and down, while observing if the transom seems to flex at all. If the transom does appear to flex, recore/replace it. But keep the boat. Or give it to me
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Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes.
Fr. Frank says:
Jesus liked fishing, too. He even walked on water to get to the boat!
Currently without a SeaCraft 
(2) Pompano 12' fishing kayaks
'73 Cobia 18' prototype "Casting Skiff", 70hp Mercury