Don't have any readily available pics of my setup but it's very similar to KF's.  The 'ducer is mounted under the bow seat using silicone and I use cable clips to keep the 'ducer cord snugged up under the gunwales for the run back to the main uit which is mounted on my thwart via a RAM mount.  Convert to 8AA power as KF does.  Keep the battery pack in a ziplock that is attached to the thwart via velcro strapping.  Same velcro strap also keeps the excess 'ducer cable out of the way.

Cable clips:
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I actually use plastic ones that are a good bit cheaper, but you get the idea.  They are pop-riveted to the hull right under the gunwale.

RAM mount:
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Something like this is probably simpler than what I have but was not available at the time.

I use a more standard RAM mount and use a U-bolt to mount it to the thwart with the ball facing me.  I can then just rotate the whole thing down when I portage and back up to paddle.  I like how it puts the depthfinder display higher up so I can more easily keep it in peripheral vision as I paddle.

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I'd like to be able to show you pics of my actual setup but most of the hardware is on my fishing boat which is in storage.  I use the same mount for my other depthfinder on the bow rail of that boat and that's where I last used it.

Also if you own more than one canoe you can save money by just buying extra transducers and permanently mounting one to each canoe.  The actual depthfinder and the rest of the setup transfers easily from one boat to the next.   8-)