Even with a map that is some scary water,with all the stumps. If you don't know the lake and veer out of the channel any at all is a good way for your lower unit to find the stumps. There just so many under the water you cannot see. I've seen people run up on plane and seem to be going pretty fast but they have got more nerve then me,most of traveling is at idle speed.
Just be careful when you up the river.
LittleJohn