generally, the only 'rules' to running an antenna are:
-make it [the run] as straight as possible.
-no knots, or folding it back on itself, no bundling it up 'because it's too long'
-don't cut it, or lengthen it
-watch where it hangs out the bottom of teh plane, as the end will get run over by teh tail wheel, and chewed up..
-don't use the little bit 'hanging out teh back' as a tie down / plane restraint
-run it away from magnets and other power systems (can impede the signal)
-run it outside the plane if teh plane is covered with a metalized polyester film
-make sure it dosen't bind / interfere with any of teh controls
-watch metal on metal connections / contact points, as they can vibrate and create a small amount of RFI (Radio Frequency Interference) [tighten all screws!]
-don't tie a hook on teh end, and try 'carrier landings..'

So, as long as it is a straight run, dosen't interfere with the controls, and will not be caught under the tail wheel, you should have no problems!