Here is a link to the Darrol Cady website. Lots of cool info here. This is the article with the straw trick.
http://www.darrolcady.com/Racing_Inf...ch/Antenna.htm
You can also get those little whip antennas that the Heli guys used to use. I had one on a PCM RX that was in a 1/4 scale fokker. Never had an issue with it. I forgot who made them. Maybe Harry Higgley?