Recently picked up a Swift Raven in good condition. There are 2 star cracks on the exterior just below the gunnels and opposite each aluminum carry handle on one side of the boat. It appears that the handles were a little long when the boat was built and that the ends were putting pressure on the hull; I suspect the cracks developed upon impact due to the pressure of the handles on the hull. I have since shortened the handles to relieve the pressure on the hull. My question is, should the cracks (which are on the outside only) be repaired/sealed to prevent expansion? Tks for any advice.