Got a cute little holiday express set from lifelike and was looking into making a christmas layout. Basically an oval with 2 sidings so I can have 2 different trains to run without having to put them on and take them off. Only problem is I can't see a good way to isolate the sidings from the main with the powerlock track. Anybody have experience with this? I know powerlock isn't the best but I'm not in the position to spend a lot of dough at the moment so I'd like to use what I have. thanx for any input.