Originally Posted by David Miller
Unless you never raft low water where you slide over rocks you should start with the dry box 2 inches above the floor with the boat in the water. If your floor gets snagged between the box and a rock you could ruin your floor.
This is what DRE recommended when they built my boxes and set the tabs. I also use a floor under the gear pile to keep the weight of my gear up off the floor.
I would agree in a bucket boat, but the only time I've ever punched a hole in an inflated floor was with a load actually sitting on the floor. Never had a problem when the weight is up on the frame, and it's not for lack of finding rocks... I too sling the gear pile.
And for those who want the story, going over a rock with a keg sitting on an inflated floor is actually able to punch a hole through both top and bottom fabric. It takes a really long time to dry out the interior of a baffled floor before patching.