guys .i have no clue about hovercrafts...was making only robots untill now..want to try something new
questions
1. is it better to have 2 motors for forward thrust (differential speed control) or just one with servo control and rotor configuration
2. what is the reciever mechanism like
3. the specification for the competition i am entering is 50 by 50 cm...any ideas on chassis constructions.
anything i should really know before starting of
any advice is appreciated

Just type Hovercraft in the Search box and see what you get.