Casting
The first and most important thing to get accustomed to in the Wii version of "Rapala Fishing Frenzy" is the unique casting mechanics. The game's manual and tutorials are somewhat sketchy about this crucial aspect, so here's how it's done. With your dominant hand holding the WiiMote, press the thumb stick of the Nunchuck to the up position. Draw the WiiMote back to a directly vertical position, the button face of the controller facing directly away from your TV screen. In a smooth, wide motion, bring the WiiMote forward to face the television, releasing the analog stick of the Nunchuck at the moment the controller becomes horizontally flat in your hand. The better the timing of your button release, the straighter and further your cast will be. You can make a gentler cast with less reach, but the same precision by not drawing the WiiMote all the way back to vertical before you cast your line.
Finding a Spot
While a well-cast lure is key to success, it's also of strategic importance to find the right spot for fishing. Use the WiiMote to steer your boat around with an eye on the Fish Finder in the bottom right hand corner of the screen. The key is to find a fish of the desired size, then match your lure to its depth. The deeper the fish, the larger the lure you should choose to reel it in. Cast and wait for the lure to sink to your fish's depth then use the WiiMote to twitch the lure until the fish comes after it. It's also possible to land big fish by staying close to the dock and casting in the direction of deeper spots in the lake. You'll know when you've snagged a big fish because the onscreen green-to-red tension gauge will go into the red.
Landing a Fish
When you snag a fish, watch the screen for controller prompts: shake or roll the controller to follow the onscreen actions. What the game won't tell you is that it's also necessary to press the "Z" button--the bottom trigger of the Nunchuck--to let the line out if the tension meter gets too high. Make sure not to press the "C" button--the circular button at the top of the Nunchuck--by accident. This will cut your line and release the fish. By alternating rolling/shaking as prompted and judicious use of the "Z" button to lower tension, you'll land big fish in no time.