That is completely awesome!...
I still have my old rods/reels from when I was young, and my son (he's 7) is catching fish with them as well. His first time (when he was 4) he caught a 2.5 lb. rainbow (amongst others), and I loosened the drag so the fish could strip line (and my son wouldn't break him off) and he was reeling as fast as he could (nothing was happening on his end) while the fish was going the other direction and peeling line from the reel. I gradually tightened the drag (my son just kept reeling the whole time non-stop like a robot) and after 10 minutes the poor rainbow came in the last 20 yards on its side, completely spent! I'm glad we kept that one, as it would have taken some time to properly revive him for release...
Ralph