Abstract: An exemplary embodiment of a boat bow guide system includes a cross-bracket structure adapted for mounting to a boat trailer at a bow location on the trailer, the cross-bracket structure having opposed first and second arm mounting portions. First and second arm support members are adapted for telescopic mounting to respective ones of the first and second arm mounting portions, so that each of the first and second arm support members may be fixed in position at a plurality of positions between an inward position and an outward position. Boat guiding arms may be mounted to the arm support members for guiding the bow of the boat during launching and recovery operations.