Hi Joe.
Clem is right on point. We use tortoises and actually use the closure rails to add power on a large #8 curved turnout. Prior to putting in the power routing with the Tortoise, we'd get stalling on shorter locomotives, especially at low speeds. MTH 3/2 steam locomotives would sometimes stall because they have insulated wheels.
Since you're "missing a rail", you can power your points and closure rails and use the Tortoise to route the appropriate polarity to the frog. Just make sure there's a gap on all sides of the frog. I'm planning on doing a 2-rail/3-rail hybrid switching layout so I'll be playing with the frogs and the closure rails since I'll be using #4 and #6 ScaleTrax turnouts and slow speeds.
