"Is it unrealistic to attempt to fly fish without a reel?"

When I was on a fire up in idaho, 2 kids on bikes came buy me with a stringer of 4 or 5 good sized trout, I asked the kids where they cought them and was told to go to the creek behind the school and use grasshoppers. Diging into my gear I got out a number 10 hook and about 20ft.of line. To make a long story short, It took me longer to catch the grasshopper ( not a young as I use to be. ) than it did the cutt-throat trout. Throw it in the water, let it drift with the stream, pull in the trout.