First, Irwin Baxter from End Time Ministries defended the post-tribulation viewpoint. Other than he is the most non-linear theologian on the planet, his post-trib defense is correct. He was given five to ten minutes to defend his position. He acquitted himself well.
Then Bill Salus http://www.prophecydepot.net/ defended the pre-tribulation rapture viewpoint. He rattled-off non-specific scripture like a machine gun for ten minutes. He wasted ten minutes of my life on rapture gibberish.