I took my basic Hovercraft model and the parts from a broken RC toy and repurposed them to make a new toy. This hovercraft will be able to float above water.
Please see the video link below.http://www.youtube.com/watch?v=lZnxrP-Sc0Q. Basic Hovercraft construction link
Step 1: Lift Motor Batteries and Switch
I installed two 7 v RC Helicopter Batteries and hot glued them to the Lift Motor housing. I hooked them up in series to give me 14 volts. I added a single pole single throw switch to turn the lift motor on and off independent of the thrust motors.