There are two trace files that I use when tuning. Cary Millsap @CaryMillsap and Method-R @MethodR have a great tool for analyzing the 10046 trace file. There is the profiler and my personal favorite mrskew http://method-r.com/store .
But the 10053 trace file is cumbersome to read and interpret. Jonathan Lewis @JLOracle posted this 10053 trace file viewer on oaktable.net. http://www.oaktable.net/contribute/10053-viewer .
If you are an Oracle DBA, Developer or Performance Engineer, these should be in your tool box.