I'm wanting to build new sides for my 12ft dump. I need them about 2ft tall. But I also need them about 4ft too for mulch but don't want to run the 4ft all the time and I don't want to change two different side back and forth all the time. I was thinking of making the 2ft sides them making another 2ft sides and then when I need to haul much some how connecting the two together but I need two make the connection strong enough to hold the weight of the mulch. If any of you have something similar if you could let me know or post a picture. Would be a great help.