Posted by Jim Demerest (jdemer@…>)
Raymaine’s newer thru hulls have a a flapper valve that reduces the inflow of water when the transducer is pulled. However, you still need to put in a dummy plug. To keep my tranducers clean I pull it and put in the dummy plug when I’m away from the boat.
Jim Demerest
Lady of Remes
F36/38