[8bitsrule]

I liked to play with longwires (sect. 4-22) back in the day ... the longer, the more directional they get. Fun to experiment with (back when copperweld was cheap). But when I did eventually wind up living on a farmstead for a couple of years, I didn't have the time (or the nearby trees) to try out really really long wires.

[jacquesm]

You can try barbed wire fences! On a dry day they can work very well, obviously you won't have much say in their direction but if you're near a fence it can't hurt to hook up a sensitive receiver to see what you get.