I came across this easy way to prepare fish in the back country. It also has instructions on a Do-It-Yourself hand line fishing kit.
Cooking a Backcountry Fish Dinner
By Will Rietveld
I wrap my stream caught fish in aluminum foil and place it inside of my DIY Venom Super Stove and roast it. This thread shows me roasting hot dogs in the stove, works well on fish also:
How do you prepare your back country fish?