Thanks Art and Ronnie. I just couldn't picture anyone running out on the field with a 50+ lb can! I kinda like the idea of a garden sprayer as I already have one that has a harness that can be carried on the back. I wonder if anyone has used the water based foam type extinguisher to supplement the CO2? I think the AMA wants at least 5 gallons present. I have seen guys do demos at events and I never saw any water, just a CO2 bottle.