: Also anyone put a seat in these things other than the wood floorboards?

I have made a minicell foam seat that works very well. I used two sheets of 1" minicell, one on either side of the keelson, with a thicker sheet of 3" minicell glued on top of the 1" sheets. Then I used a small piece of dragonskin to carve out the top of the seat to fit my behind. I tried it with an integrated backrest, but find I prefer a commercial backband (SnapDragon) since it works better. I take it out when I am not using the boat to let the skin dry.