If a trout is invited to dinner, that's the only mission for the outing. As soon as enough of our finny friends have joined me, they get a ride home in the cooler on a comfy bed of ice.
Meanwhile they're in a canvas creel that I can dunk periodically. They get gutted and gilled ASAP. They would come from a stream that needs to lose a handful of the pan sized ones on a regular basis.
If I'm truly in the back country, I don't like to carry around dead fish on my person. I might consider building a fire where legal and roasting up a shore lunch.
Most often though, I like to fish for as long as possible without worrying about preparing fish, so a burger and fries are more likely to be dinner.