I have a Tundra with topper...works great! I haven't gone to the trouble of tricking it out with a platform. If I spent weeks in the field I likely would consider a platform. I have plenty of room behind the seat and beside me in the bed for gear. I have a padded bedrug bedliner in the bed, sides, and topper which insulate it a little. I cover the bed with a tarp when hauling leaves, etc....sometimes tricky to keep clean. It's super nice having the mobility to sleep in the topper where ever I end up for the night.