http://www3.towerhobbies.com/cgi-bin/wti0161p?&I=LZ0813
This is the set up I use not too expensive. I like this one better
http://www3.towerhobbies.com/cgi-bin...?&I=LXB361&P=0
Ultracoat is the easiest to use any of that will do fine. one thing though make sure you drill a small hole in each rib so hot air can escape as you install the covering. 1/8" hole will work fine. The trick to ultracoat is getting the iron hot enough to lay down the covering but minimize the shrinkage . Then come back with the iron hotter and shrink the covering. Any trouble spots hit with the heat gun. thats my method of doing it. work slow , take your time.