THanks for the explanation. I'll go with that and when I get to wiring, I'll likely need more help. Dad is going to order Mianne benchwork. We are going to go with 3/4 plywood with homasote glued to it. Track will be attached to the homosote.
Seaboard, I doubt Dad will have that many cars on at once. Probably 10-15 at the most.