Lesson 7: Water Placement
Here's how you place an object in water in only one step. Put a carpet down (somewhere on land obviously). Move it, and hover it over the water you want your object to be on.
Do the trick, by clicking on something in your inventory.
The carpet's ghost will be in the lake. Then you can place your item on it. HINT: If the object you want in the water is too big for the carpet, do the two step trick.
Go inside, and back out again, and there's your floating object!
This trick can also be used to float items in the air, or up walls, using only one carpet.