The finished product... Amanda was the evil ground squirrel that was later unmasked by the gang. I assume you can guess the other characters.
Unfortunately, the helicopter crew beat us out for best float, but we had too much fun to care. There were quite a few ingenious costumes including lake sampling equipment (rubber raft, secchi disk, syringe, net, etc.), sauna rules (no talking shop, no boats, don't use Adrian's towel, etc.), and the Queen of the Lake (Codi as the mermaid queen on a litter with lobsters, fish, plankton).