I don't plan trout. I do pretty much everything on the fly. I might, say, plan as much as, I'm going to take a week and drive to so-and-so place. That is about the extent of my planning. No looking into hotels or where I'm gonna stay once I get there. smurf that. I'll figure it out along the way. I think it is more fun like that.
As for budget planning and such. Also no. I spend my money until it is almost gone and then stop buying trout when the money runs out.