I think the well system made of Duct Seal is the best for installing a transducer on a kayak hull. (thru-hull).
I is easy to make, easy to undo or redo. No tools are required at all. No sanding no heavy cleaning required at all. It is the cheapest and the fastest. There is no waiting time. You make it and go fish.
Though, I found that gluing the transducer on the hull, regardless of glue types (including Duct Seal), is not quite dependable. Because there is an inherent problem that is air pockets or air bubbles form between the hull and the transducer.
Build a well for the transducer and fill the well with water is the best way to achieve consistent and accurate readings for a long period of time.
On the video, I explained and demonstrated why a transducer well made of Duct Seal is the best way for installing a transducer on a kayak hull.
Joe
Post time: Jun-26-2017