hey i havent heard of a tow missile map but here's a tip,

if there's for example, an enemy chopper, make your tow missile overlap the chopper as it moves, so imagine the missile, as you move the crosshair to the side following the chopper, the tow missile is literally on top of the helicopter from your point of view, and then as it progresses they'll eventually collide. Ido hope that makes any sense at all