Boy scout archery range help needed

[BUFF]

I will be setting up and running a archery range for the boy scout camp on lake Murvall the 20th of January. I could really use a couple of folks to help. I have the 3-D targets and bows. I just need more adult supervision.

I would also like to buy a 4' x 8' piece of foam to put balloons on if any one knows where I can find one.