Craig Zarley who was a presenter at Canoecopia thinks all you need is a jig between 1/4 ounce and 3/4 ounce with a white twister tail.  You vertical jig the jig unless it is spring and the water is cold then you could fish in the conventional way with a jig.
Water temperature is more important than depth.  There is, of course, a correlation between temperature and depth.  I use a thermometer which records the temperature every 5 feet.  A depth finder is also very helpful.  My understanding is that trout will come up to get a lure, but rarely go down to get a lure.  Trout like water around 50 degrees.