seamsealing underbody

[chargerguy111]

I am restoring a 68 Dodge Charger and I chose not to use the rubber undercoating.I am going to use a brush on seam sealer any where a panel meets or overlaps.My question is,should I use it also where the floor pans set down on the framerails?My car will not be a daily driver so I'm not really worried about dirt or debris getting in the nooks and crannies.Has anyone done it this way?If so, how did it work out for you?Thanks to all that reply!