Silstar 13cm Unrigged Troll-Em Christmas Tree Lure This christmas tree lure is an outstanding lure for trolling behind your boat and are designed to catch a large variety of Australian fish species. They can be trolled keeping the lure under the water at all times or trolled slightly quicker so as the lure breaks the surface of the water occasionally. Rig these lures with 40kg-75kg mono line or 30kd-60kg wire. Use a 6/0 to 8/0 trolling hook and troll behind your boat at 4 to 8 knots. You can troll these lures in the wash of your boat, at the end of the wash or place one well back from the boat into the clear water.