Coop, first off condolences to you and your family.
Thirty plus years ago my Dad and Uncle drowned on the Columbia Bar. The captain of the 20' cuddy cabin survived. Three in total drowned. No one had their life jackets on. A real shame.
I just turned 56 years old. I still wish for my Dad today. But I know one thing Dad would not want me to give up is fishing, or any other sport due to his death.
It does get easier, but never will it be easy. Remember what your Dad taught you so you can pass it along to your kids. He is watching and would want you to hit the water as soon as possible.
Hope your fishing brings you smiles, memories, and of course, tight lines!