Imagine going down to your new "used" boat after a 6 week hiatus away from the marina. Now imagine opening the companionway hatch only to discover the boat is filled with 8 inches of water every where. Now imagine there is no bilge pump anywhere on the boat. My biggest problem was discovering the source of this water leak. When I originally purchased the boat, I was informed the water was coming in through the companionway hatch. The original hatch had been replaced by lexan clear "boards" to allow more light in. I bought a cheap cover for the hatch but the water still continued to come in - in gallons. Due to our Pacific Northwest rainy season, I had to go down to the boat and pump it out with a portable sump pump I purchased from Sears every other day. At one point you can imagine I wondered if I had made a good "purchasing" decision of the boat. I next suspected the stanchions but thought too much rain was coming in (I tasted the water) for a stanchion leak. At the time of purchase I knew the boat had one issue which I was going to resolve, the drain hole in the transom was far to small to be effective. Due to shell droppings from birds, this hole plugged easily. It wasn't until I really examined the transom storage area closely that I discovered the culprit. Water wouldn't drain from the transom locker and the height of the water covered the platform areas for fuel and propane. I found eye bolts had been installed for the hold down rubber "band" (I've blanked out on the proper term)for the gas tank and propane tank, and over the many many years, the holes had enlarged as the eye bolts moved around. I also found a major hole where the gas stove tubing came through for the propane tank, with no plug to block water from going down (some have told me that the tube should not be copper or whatever and instead should be flexible rubber tubing - is this true?) So it ended up there were about 5 holes most smaller, one bigger that allowed water in when the transom locker filled up. My trusty marina repair guy (Boat Centre) took one look at the problem and declared Catalina's system at the time to be mickey mouse for proper drainage. He installed L joints in the cockpit drainage holes (forget the proper term) which linked up to one long thick rubber hose, with another hose "T" in for drainage of the cockpit water exclusively; this included a separate drainage through the transom. He installed a cover for the cockpit drainage holes that filter out large chunks of sea shells. The original transom drainage hole was widened substantially so that now I have two holes through the transom for drainage. The boat is now dry - thank God! I didn't know whether to post this or not, but decided if some one is having unusual leaks they can't trace, this problem might be a source for them.