i always suggest that road racers use the roadbike with clip on aerobars before taking the plunge and getting a tri bike. did you ever try that? give it a shot. if your trek with clip on aero bars feels great, there might be a chance to find a tri bike and a tri bike fit that will work for you. if you don't like your trek with aero bars, i suspect you're probably just not comfortable with a riding position so stretched out, so low, and so unstable for overall maneuvering.