Bear Lake: Best trolling is in the 90' depth areas and suspended in the 55' - 30' & 20' mark. Troll with Kwik Fish, Flat Fish, Jointed Rapalas, and other types of spoons and spinners.
Best locations would be off of the Rock Pile, Rainbow Cove, Off the Marina, 2nd Point, and South Eden. Look for groups of fish in the 2 to 4 range. If groups are more than 4 it is typically trash fish so don't waste time fishing for them. Take bouys or GPS so you can mark the spots where you had the best action so you can put it in your log book.
Trolling the surface can be good for you that don't have down riggers. Use smaller Rapalas, Spinners and Spoons and troll 3.5-4.5mph. Use the "S" turns for better results.