After the first time I submerged my Tracker, all the carpeting was soaked and smelled like a wet dog. I yanked it all out and Herculined the whole tub. I use acustical sound damper under rubber floor mats I cut from an old rubber truck bed liner ( very thick and tough) and it works pretty well for cleaning and sound damping. I also removed my back seat and all it's belts and mounting crap for more storage room, and made up some 3/4" thick hardwood panels to mount my rear 6x9 speakers. I also used 1/2" sound deadening material in the doors, rear deck and inner fenders, and rear door. Sound is excellent. I just finished replacing the rear door plastic inner cover with a 1/2" marine grade sealed plywood panel, that secures to the door with wellnuts, and remounted my rear storage bins with t-nuts. Much stronger and quieter.