Cam degreeing help me understand!

I have a whole set of used hydraulic lifters I kept for that purpose. Lol my plan was to gut one filling it full of washers and weld a old pushrod in it. But I kinda like the wood dowel idea now. I may try both.
Just curious. What spec are you degreeing your cam to? How many degrees plus or minus will be close enough? How do you plan to change it if needed?