Here's my contribution to the home-bake sounder install for Hobie cup-holders...
Here's a couple of pics of the almost finished (and ready to test!) unit:
I wanted a mount that was completely self-contained and easily removable. I took inspiration from a couple of projects that other AKFF members had already completed.
The mount is a combination of various bits of PVC pipe and joiners, cunning fashioned into a mount that holds the batteries and (overly!) generous 6m of bunched transducer cable, with the head-unit attached to a screw-on cap.
The transducer is bolted to a 3mm aluminium strip which is in turn bolted to the PVC mount. It's very solid and grips the cup-holder and side of the yak very securely. I'll probably also leash it to the yak, just in case.
For power I've used 8xAAs (can be alkaline or NiMH), which are easy to get and cheap. Plus they run for a decent time - never tested them until flat, but will certainly go for an entire fishing trip.
The trickiest bit was actually fitting all of the excess transducer cable inside with the batteries! I was going to cut about 4m from the cable, but decided to leave it for the moment.
It's 80% done and is ready for the first 'live' test sometime this coming week - weather permitting!
Once I know it works I'll finish it off and post a detailed step-by-step build guide, if anyone else is interested.