How difficult could this be? You play a young angler sitting on a riverbank with his faithful dog by his side. In the river, you could see fish swimming back and forth. With your Wii-mote, you hold your line by pressing the trigger and release as you cast. Once the fish strikes your lure, you set your hook and then you reel it in with your Wii-Nunchuk, playing it by reeling, releasing a little tension by lowering your rod - er ... Wii-mote when you got a screamer - I mean ... no, you don't actually set tension on your reel, so it doesn't actually scream ...
OK. Let's start again. It is not a fishing simulator. It's a kid's game, and here's how it works. You can cast directionally toward the fish you see on your screen. Once you set the hook with a quick uplift of the Wii-mote, a bar with a fish shows up at the top of your screen. If it drops down, your fish gets away. If it hits the top, your line breaks - and your fish gets away. Your aim is to keep the fish in the middle while you slowly bring it to shore. Other actions besides the motion of the reel would be to lift your Wii-mote to the right or left as the fish tries to get away.
Actions are not subtle, and any child old enough to handle a rod (5?) should be able to play this game. It's actually a bit of a challenge as you get used to the effect and motions. I lost my fish about six times before I got the hang of it and got one in. It was an eel, and according to Charlie and another Konami employee who had stopped to watch my frantic actions, that was a difficult fish to land. Whoopee for me!
I'll say that it's a testament to the feel of the Nintendo Wii and the simple, yet effective graphics of the game that I reacted as if I would if I actually had a real rod and reel in my hands.