I've actually seen lots of reviews and videos stating that there have been connection problems with the Deeper Portable Sonar and the FishHunter Fish Finder. The one that seems to not have these problems is the iBobber. The iBobber is cheaper, but I've also heard, although it is great for finding depth and structure, it is a poor fish finder (it says there are fish present when there are not).
I would like to get one of these to assist in my winter pond fishing. It won't be attached to a boat and I would expect to be able to cast it and use it in remote areas. Has anyone had any luck with one over the other?