Ladder standoff stabilizers should be used to avoid damaging shingles. Also pictures of roof modifications should be included demonstrating proper sealing of parts installed ~ saving the homeowner from having to access to roof for inspection.
Final cleanup inspection by the foreman should avoid issues with unavoidable smudging of ceiling and attic access areas.
Your trade show exhibit personnel were extremely helpful in explaining to my wife what you could do to make our home more comfortable.
Nice people to do business with