The best advice I give people is to put a set of these on your trailer.
http://www.basspro.com/Bass-Pro-Shops-5-Bunk-GuideOns/product/1309251421/
When set up correctly all you have to do is drive straight on and hook up the winch, tighten her up, tilt motor and drive away.
I can launch and load faster by myself than pretty much anyone I have seen up in the NWT.
When my buddy and I used to fish together in Ontario we could launch or load in under 30 seconds.
It's not rocket science. A little practice goes a long way.