Mike Thomas said:
That’s what makes my drip such a mystery. My wiring trough and the instrument hatch is bone the entire length of the boat while the water is dripping???
I don't think I can snap a pic, but this isn't the wire area I'm referring to - sorry if that confused you. My point was only that I found the 2nd leak to be the wiring trough leak. This empties into the bilge, and as such I never see it make a drip. On my E27, the "trough" is actually just below that wood panel.
When I looked into the instrument hatch, I was able to find some water in the instrument hatch, but it was ONLY just at the bottom outer edge, which is where the water would drip to if it came from the window frame (or roof area). On my E27, this area is all open and the space in-between the inner and outer hulls had a little bit of moisture. If I were to pull the windows completely out and looked straight down, I'd be looking at the very same space.
I pulled the wood panel off the quarter berth and was able to confirm the winch and cleat (both immediately behind) wasn't the problem. The part of the shell that is the back side of the rub rail, at least on mine, was dry. In fact the whole outer hull was dry on the inside. On mine, the leak is coming from "in front" and above the drip. Therefore, the location of the rub rail on my E27 would imply that the rub rail isn't the leaky part, at least for me.
I did notice that, during my troubleshooting, it suddenly began to drip "all-at-once" as if someone had turned on a faucet - that is what led me to believe a pool was accumulating just out of sight, flooding over the low spot, and making the drip a very sudden gusher. The fact that I was monkeying around in that area, rocking the boat, would make that seem more likely.
Of course, yours may be totally different! The little hand mirrors and BRIGHT flashlight did wonders for me - that may be something you want to consider.
It doesn't help that I'm not too sure how much of the roof has a cored deck. I would figure at least the non-skid areas, but how far to the sides of the roof is it cored? That may provide another clue, because if the water is travelling from a hatch or something, it may be wicking along the edge of the core...