All - I recently purchased a 2007 May Craft and had the boat surveyed befor buying. Survey came back clean. These boats have a wood-core transome and wood stringers. Survey showed no moisture in either. I took the boat to a reputable local marine electronics installer to have Raymarine electronics installed. After the install I had the boat out 4 times. This weekend I was detailing the boat and looked at the transducer, which appeared not to have any sealant around the screws. I took the screws out and removed the transducer. 2 of the 3 holes were dry but the third had water in it, and the installer did not use any sealant on the screws or around the holes they drilled. I used a shop vac and bits of paper towel to remove as much moisture as I could from the 3rd hole, then sealed everything with 5200 and re-installed the transducer. I documented, took photos of holes without sealant, and sent to the installer but they have not responded. I am concerned that I may get transom rot in my new boat. Should I be concerned? Has anyone dealt with this before and are there any steps I can take to prevent rot in addition to what I have already done? I don't want to drop the installer's name in case they decide to make things right.