What are the major pitfalls that most users fall into?
Bad mixing practices cause 99% of all problems. MIX, MIX, MIX and MIX some more. During coating, the temperature falls below dewpoint. A little temperature goes a long way toward good coating. Weak bond is a result of too much clamp pressure, The key to a strong bond is light pressure and adding the correct filler. Allow maximum clamp time and warming the piece can reduce this time (a light works well).