I am installing a new Garmin Echo GPS depth finder in my 1968 31 Commander. I am interested where other owners have installed the thru hull transducer. I am thinking of under the floor in the head or under the dinette floor. Thank you for your input.

Depending on the size of your transducer you may be able to mount it on the lift strake under your dinette. It points straight down and wouldn't require the addition of a wedge
Love the bottom paint color. What product and color code is that? I have been using a few tones of blue the past couple seasons against the navy boot stripe but am looking to get to a more classic look like that. Too hard to find a nice tone of copper that doesn’t look brown in a week. That red looks great