Good Morning:

Was wondering if anyone can give me some guidelines on use and what to use for uncoupling magnets using the EZ Track System.  I have a bunch of N Scale EZ Track sitting around and enough to build a Inglenook Sidings Shunting Puzzle http://www.wymann.info/ShuntingPuzzles/sw-inglenook.html and was wondering what in the world to use? I cannot seem to find an answer for use with EZ Track. 

I have seen the Microtrains 308 undertrack magnet but I have also read somewhere of magnets that can be purchased at Radio Shack.  My concern is being under the bed of the EZ Track will they be strong enough?  Is there a magnet that works on top of the EZ Track?  Sorry these are probably very basic quesitons but have never done this before yet.  Any and all suggestions welcomed please.   

Thanks

Mark