Today, we added a mod to our son's room in the TT. We own a Jayflight G2 31BHDS. As we spend a good part of the year living in our Rv, it needed a seperate room for our 12 year old son and his bearded dragon. When we were looking for the perfect RV, we looked at 2 with the same layout, but the one bunkroom had a captain style bottom bunk with a trundle bed. That TT wasn't in as good a shape as the one that has the J-Cube couch/bed, so we went with the J-Cube one. Our son has sleeping on the floor with just the one mattress under him. We found that during the wet, cold winter months and not having any air circulating under his mattress, a bit of mould would grow under it. So, we have now built a custom platform for the mattress! He now has tons of storage under his bed! We built it so that the long flat totes will slide underneath. Easy to pull out, don't even need lids, holds lots of clothing, books, lego...He's thrilled and can't wait to get back out on the road to try it out!