I don't have any soft spots on my 35.5, but here are a few possible places to check. I was getting water running down the mast compression post after a hard rain when I first bought the boat. After a suggestion from this board, I injected silicone in the wiring riser that goes into the bottom of the mast. If the mast drain holes become clog, water can accumulate and overflow the riser.
Another potential place is the seals around the skylights. These shrink with age and may begin to leak. The problem is that once water gets into the boat, it can travel anywhere.