Switching is the part of railroading that is an art form. Kicks as you mentioned but everyone's favourite were the drops. Management takes a dim view of this particular move. They came in two variations, the second being the 'Dutch Drop" my personal favourite. You needed three guys on the ground but it allowed you to set out cars when the switches all worked against you. You wound her up, bunched, pulled the pin, really wound her up this time and went past the switch with the engine. Switch was lined, you backed in the power to clear, switch was lined again and the cars allowed to roll by. Your unit was now on the other end of things and away you go. Lots of room for error as you can imagine.
Hump yards are a neat idea. They make up huge trains in a short time. They control the cars with 'retarders'. They squeeze the wheels against the rail by remote control. Winnipeg has a good example of one of these big yards.
Some one mentioned buying ties. By the time they are changed out these days, not much left. If you know someone who is on the maintenance side they may be able to line you up with some decent stuff.