My husband and I just purchased a 2000 Tracker Targa 18WT. We've had it out on our NY Finger Lakes 3 times and have really enjoyed it. After retrieving the boat, each time there has been a large amount (gallons) of water draining when the plug was removed. Is this normal? It did not rain nor were the waters especially rough. I also was wondering what the two plastic holes on either side of the hull are for. Drainage for the bilge? To take in water for ballast? The owner's manual is extremely unhelpful. My husband seems to think that all this draining water is normal. I am skeptical because we had a 17ft jon boat before this and it hardly drained a drop. I am handicapped and he has 3 inoperable ruptured disks in his back, so we want to be safe. Any help or opinions would sure be appreciated!