thanks for all the help guys, i ended up using a modified garbage bag for the skirts, i carved props out of balsa wood and reinforced them with tire glue. the main body is made out of popsicle sticks. It worked, sorta. We placed 3rd in the competition. The challenge was moving without wheels in 30 seconds. We made it like 30 yards or something around that. 3k towards my dream of eventually building a battlebot.
Thanks again,
Andrew