If you think about it the trailing arm system is really just a very large "A" arm. I personally think that the trailing arm would be a stronger system for frontal impacts, as the rear point wouldnt have to endure so much stress. As for racing i dont really see much of a difference in the styles. As i have said before, you put Blair Morgan on any sled in that field and he will find a way to take it to the front. Its not the sled but the driver.
Polaris is my way out - Other people just use a door.