I really do take as many precautions on everyhting I offer, I even tell my clients who shoot the gun to NEVER shoot at people directly and always above them to prevent freezer burn... and you're right there are many that don't take precautions at all. It's like asking how many of you put sandbags on your lightstands or tripod stands. I actually bring 2 sandbags in my van for times when I have equipment near high traffic areas that someone can trip over. Even dancing on the clouds has a liability aspect to it, as moisture builds around the machine, and if not cleaned up right away, can create a very wet surface and cause someoene to slip... which is why we have a rag or towel to clean right after we're done.I agree and as cool as I think those CO2 guns are, I would be very hesitant to use one myself. Just like, in the 12 years since we inadvertently started a paintball course, I wouldn't be so flip to just throw out a contract and some regulations and say that was good enough.
I'm not aiming this at Taso, who by all indications and from his videos, seems to take as much precautions as he can, I am merely stating that some people are going to be cautious and some aren't and it is up to us to decide if this is a service we want to offer or are willing to try if a client insists, and if so, what precautions we can and should take.