Something needs to be done about this ridiculous situation currently. Since devilsaurs have a static spawn, hunters lay traps right under their feet, making it impossible for anyone else to get a tag, since the traps go off and tag them before they even spawn, due to latency. This wouldn't be so much of a problem if there weren't multiple hunters trap camping around the clock.
Your only option then is to buy it off the ah for inflated prices, further encouraging this douchebag behavior.