There is no track on the Marstrom T...just hooks embedded into the inner gunwales that the tramp laces to. From the pic of the A, looks liek that boat has a rod (glass?) inside the edge of the tramp that the laces wrap around. This is a better solution than the tramps I've seen on current Tornados...which lace to webbing straps on the tramp. These wear out frequently.

Tornado limits how much of a gap there is, while I believe the A is unlimited. Tornado also limits the tramp material to prevent people using wide open nets, as some guys tried in the past. Wonder why we don't see these on the A?