05-06-2006, 05:02 AM
i think youre talking about cannon digi-trolls. you can get the ones that interface with a bottomline sonar or the digi troll IV which has its own transducer. perhaps someone who owns one can chime in. heres a link to the digi troll IV. good luck, they can be pretty pricey!
[url "http://www.bottomlinefishfinders.com/site/html/htmlsite/cannon/digi_troll_iv.htm"]http://www.bottomlinefishfinders.com/site/html/htmlsite/cannon/digi_troll_iv.htm[/url]
[signature]
[url "http://www.bottomlinefishfinders.com/site/html/htmlsite/cannon/digi_troll_iv.htm"]http://www.bottomlinefishfinders.com/site/html/htmlsite/cannon/digi_troll_iv.htm[/url]
[signature]