As much as I would like to have a SI unit I will probably have to invest most of my money from the sell of my two boats into an upgraded outboard and a trolling motor for the boat I plan to buy. So I'm guessing that I may spend less than a thousand and probably more like five to six hundred. The GPS would be wonderful but not an absolute because I'm retired and I fish the same waters all the time, but a gps would be nice to mark structure below the surface.

I was thinking about a Lowrance color unit. One of the guides here on the TFF was really informative last winter about how good his Lowrance C was and how he could ID catfish from other fish and how structure really showed up and the structure thing is really interesting to me.

Thankyou Mark Parker for the input, this will give me a starting point for research and if you don't mind a may call on you with some questions. From what I've seen here at TFF the hummingbird SI are dream machines but it looks like the price is out of my reach.... Thankyou