> After growing tired of daily poached trout on my recent TYT (Kennedy Meadows to Tuolumne Meadows)-->JMT trip, I tried grilling some using my tent stakes as a grill. I just found some flat rocks in the existing fire ring, and piled them on top of the curved end of the stakes.
Try heating the flat rocks for a while in the fire, then flip them over, dust off the ash and place the fish on the rock. With the rock at the right temperature, you don't have to worry about
* burning the fish,
* the fish falling in the fire,
* getting ash/charcoal on the fish,
* instabilities while flipping the fish.