Guys, I do 80% of my fishing anymore December to end of May and tend to be fishing banks more so then off shore structure. If I'm sitting 75 feet off shore line in 8ft of water imaging the bank, will I be able to get picture all the way up to say shoreline?

I have looked at the demo of the 797 and just that alone indicated to me a significant learning curve to even make sense out of what the unit is telling me.