Step into a floatplane cockpit and you'll notice a few controls a landplane doesn't have. The most important is the water rudder handle. Pull it back or up — depending on your installation — to retract the water rudders, and push it forward or down to extend them. The rule is simple: water rudders DOWN for slow taxi and maneuvering around the dock, and water rudders UP for the step taxi, takeoff, and landing, because at planing speed they'd be torn off or simply ineffective. Steering at slow speed is a blend of the water rudders, the airplane's aerodynamic rudder in the propwash, differential power, and using the wind. There are no brakes — you cannot stop a seaplane the way you stop on a runway, so every move on the water is planned around momentum, wind, and current. You'll also rely far more on visual references outside the cockpit. Before you ever touch the water you should be able to find the water rudder control by feel, know which way is extend and retract, and have a flow that retracts them as part of your pre-takeoff check. Forgetting to raise the water rudders before a takeoff run is a classic beginner error that hurts acceleration and directional control. Treat the water rudder handle with the same respect you give the landing gear lever in a retractable.