Originally Posted by BloodSport
Keep in mind most "waivers" do not stand up in a court of law when it comes to injuries on a field. Hence why they have insurance.
The waiver is just a deterrent to try and keep people from suing.
I will second this.
You are inviting people onto private property, which now makes you liable for anything that happens to them while on the property.
Hell, even if someone broke into your house and tripped down the stairs you would probably be liable.