As far as under bed storage goes, it’s proven to be very usable, and convenient for us. As shown in the picture Charlie posted, we divided our storage into 4 uneven sections. One is for the water heater, which is to be protected. One is for that long drawer that my wife uses for her clothing and whatever. One is for shoes, and the last is for larger items that are accessible from the outside hatch. There have been some modifications since that picture was taken, but you get the idea.
The grey metal legs you see at the forward end of the drawer are our director type chairs, (with flip-up tables) so they do fit under the bed, along with a table, hand-truck, cloths line, drill, (2 batteries, charger and case) a 6 gallon empty jug of water, and various accessories.
With our under-bed storage setup the way it is, the only time I have to lift the bed access is to show others what we’ve done. So that stick used to hold up the access panel you see in the picture works just fine for us.