This is not a softwater story. I purchased the x67c ice machine this winter for ice fishing and plan on using it in my boat this summer also. You need a different transducer, but from what i hear it is well worth it. This winter, it worked awesome. I like the split screen mode in about 20' of water, one side has the whole water column and the other has the bottom 10'! Got a good deal on it too! Hope this helps!