If you launch at 121, you can fish inside the cut with little worry that you'll hit any standing timber (unless you go way up toward The Colony). Going outside the cut, you can run straight across the dam face (as much as 1/2 mile off the dam) with no problems all the way to the 35 bridge. If you go west of the 35 bridge, be careful. Going out of the 121 cut and turning right (north) is where you can get into trouble if you don't know where you can/can't run, and especially out in the middle of the big lake...it's a forest out there, regardless if you see high speed ski boats running out there. They get lucky...most of the time. If you do get into the old Lake Dallas area; you're good as long as you don't go to far north. The Little Elm area and the Cottonwood areas are places you need to be careful also.
I realize this is pretty vague information, but it is really hard to tell someone where all the 'widow makers' are. You only learn that by time on the water. Good luck.
"The Crappie Guy"