I'm a newbie, and I can't decide which turnout system to use. Even after searching the guage. I have #4 Mark 3 turnouts (HO), and I plan on doing alot of switching. I would love to draw on all the vast experience out there as to your idea of the best system or combination to use. Electric switches and tortoises I pretty much understand but not ground throws. They are for hands on aren't they? Any feedback will be much appreciated. Thanx, gmbrd