I had tortoise switch machines in HO, but then again I never had a yard. I want to use ground throws on my new layout for the yard. Suggestions? I don't care if they aren't the most realistic, I only care that they work well and are reliable. I am using Atlas code 55 #5 turnouts. Do I need to power the frogs? My only engine as of now is a Proto RS-2. I won't have anything shorter than that. Thoughts? Thanks.