I have a permanent layout using Atlas track. Thanks to Ingeniero No1 (Alex), here on the forum, I used his method to connect all power to my Atlas track. Here is a post that has a couple of pictures and also a list of items needed/used to make the connections with link to suppliers used for parts. Alex's method of fastening power drops to Atlas track.
It has worked great for me and I am thankful that Alex posted this in his build thread and I found it before starting on my permanent layout. It has been the 'perfect' solution to power track for me! I have been very pleased with this method!! Thanks again Alex!
Here's a link to Alex's build thread with more pics and also a lot of good layout building info and a really neat layout being built as well.