speckhunter has one and I liked it pretty good. I was looking at them so maybe he or someone can answer some questions for me.

Does the unit not come with a transducer?

I saw "available" list which consisted, of other things, a dualbeam plus transom transucer, a quadrabeam transom transducer and a dualbeam thru hull trolling motor transducer.

What is the difference between the dualbeam and the quadrabeam, other than two beams, obviously. LOL

What's with the thru hull trolling motor transducer statement?