An inverted vee-tail ala Predator looks neat, but has two liabilities.. it needs a landing gear to keep the tips off the ground.
It limits the alpha available for takeoff and landing.
I've seen a "scale" model of the Predator, where the builder did it "properly".. tail going up ala Bonanza.
The other solution is to place the vee at the end of a couple of booms back from the wing, with the vee above the wing and out of harms way..
Check this page:
http://www.angelfire.com/indie/aeros...PhotoPlane.htm
I fly this one a lot.