05-07-2006, 07:06 PM
I picked up both my Digi-Troll IV's from ebay a year or so ago for around $600/ea - one was new and the other slightly used. According to Cannon, Mag 20's will also interface with the Bottomline FF, though I am with Jared - Lowrance 104C is my bread and butter. I'm not a big fan of the Bottomline stuff as far as graphs go. I purchased the transducer that interfaces with them and the cable from Cannon. Like Jared wrote, they are the only ones on the market that track bottom - VERY handy when going for Mac or other fish holding right on bottom. Also easy when trolling for fish off the bottom a ways, as I use them set to bottom +20 or so often in other situations. I will say that the Cannon transducer that you use for them has the narrowest beam I have ever seen. Occasionally I'll have it pull the downrigger weight up and over a big fish as we pass over it. Getting your transducer set up right on the boat initally can be tricky, as you have to have it "looking" just forward of your downrigger weights in order to have it adjust the weights up and down at the proper time, otherwise your snagging bottom. Instead of carrying multiple type of downriggers on the boat, I just use the Digi's for everything. They have a real solid feature setup even with the bottom-track.
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