I have done this, because I like to make my planes look nice, I learnt how to cover from (I beleive) minnflyers videos here on RCU, they are very good take a look. For the hinges I simply looked at the problem and engineered a solution, a buddy of mine in the same club does the same thing, he wrote a series of posts on our club forum on how to do covering, he is very good at it, this includes how to do hinges etc, just take a look here http://www.sccmas.org/smf/index.php?topic=284.0

HTH

James