I actually find door knockers to be the least offensive. Sure, it's the most intrusive, but it also costs the most, in time/manpower. It says that this candidate has people who support them, not just PAC money to throw at advertisement. You get to talk to a human being and gauge how much they actually believe in their candidate. You can ask pertinent questions about the issues.
The gold standard, for me, is when a local politician knocks on my door themselves. That is representation at its purest.
The fact Q shows up at the end to meet Jack makes me wonder if he had anything to do with the "accident".