thanks all for the good info. I think everyone has confirmed what I was afraid of, I think the ultrex would be the best fit for me. I cant say if I would get used to remote use or not since I have never had one, but mostly like to fish docks, creeks, working pads, pockets, etc...don't do any trolling currently. I just think I will still be a heavy user of the foot pedal for what I normally do.
It all started because I just wanted spot lock and saw the terrova could be had for around $1400 give or take. It took some time but I had come to peace with spending that much or less to get it. But the down scan is something I don't want to give up, and really don't want to have to reinvent the wheel in order to get one mounted and cabled. Now having to jump to 2k or more is gut wrenching, but probably the way I will want to go if I decide to do it.
I have an 07 bass tracker 185, so I assume in order to get to 24v I will need to add a 3rd battery and probably have to upgrade my TM wire. I don't know what it is currently but assume its smaller than I will need. Does the old motor guide come off these trackers fairly easily, I do have a front access panel I can remove but my boat is not home currently for me to look at it. I am hoping I can access the bolts without too much problems