I have an 89 34,and I installed newinstument thru hulls in the bow.after th boat was in the water very often I would stick my hand down in the locker to see if it the thru hulls were laeking.after a few sails i did the test and was shocked to feel water there.iI checked and found a smal lhole in the bottom of the bulk head to drain any water to the bilge.water slossed from the bilg up to the hole and left a little water that did not completly drain