Sorry for your loss. I know how you feel. When my father passed away, it wasn't the same. I sold my boat and didn't fish for 7 years.
My wife surprised me 3 years ago and said it was time to start back. Every time I go now I think of all the good times we had together. I laugh while out there when I am at a place he caught fish and can see him doing it plain as day.
Once again, so sorry for your loss.