Or better yet get a fire truck to drive along with critical titis spraying cameras and spectators equally, no liability for wet cameras right, read the back of your ticket, and if some dumb ape freaks out about his camera, tha would be great, kinda like instant karma for his perving. just my 2 cents...

water guns and water cannons, best idea ever!!

take 3 mil plastic and duck tape it over the mesh, then you can close it all the way, most tents have another zipper to open the whole window. good luck, thick trash bags will work too.