On campaign signs and doorbelling

I spoke with a trusted friend today, one I feel knows more about politics than I, and she told me that is is important that I purchase and put up campaign signs.  She pointed out that this reinforces name recognition when people go to vote.

She also pointed out that doorbelling can be the difference between a victory at the polls or a defeat.

She is a great friend and I trust her council, but, neither of these tactics have ever helped me make my decision as to who to choose.  Please let me know what you all think, should I change my plans to include these two methods or stick with my initial take on it.

Thank you
Tony