Posted on Wednesday Aug 28, 2013 at 10:29 PM
I would be tempted to get a 3' long rod of 3/4 or 1" square alumimnum from Lowes, cut it in half, mount them side by side vertical on that livewell pump doghouse, and extend it down that way. You could even C-clamp them against that doghouse and do some test runs, to see what works best for the transducer, before you commit to holes. Just a thought.
The more you practice, the luckier you get.