Setting Up Ultimate

Today I investigated the options of playing ultimate frisbee as a weekly get together, and the situation regarding the fields is disappointing. Here are the options:

1. Rent out an official grass field for some afternoon, on a fixed schedule (ex: 11:30 on Tuesdays or 3:00 on Fridays). This is great except they charge $20/hr + 7% GST (and that is the student rate!).
2. Find an unofficial field on campus, perhaps by the residences. These fields might not be as flat as desired or may contain rabbit holes, etc. The problem here is that if anyone hurts themselves and I organized it, they can sue me for liability. Another problem is that campus security can shut down our game if they think a) we are damaging the field or b) it is a safety risk.
   
3. Find an unofficial field off campus, like at a high school or elementary school. Campus security mentioned Mount Douglas High School or Campus View Elementary School. I know where the latter is, and it is right next to campus (obviously) and has a nice field. They may rent out the fields, or the cops may come by and one day decide that we can't play there anymore. I imagine they only rent out the fields during the evenings. We'd just have to wait until school was sufficiently over for the day, but that doesn't give much time until it gets dark.

Well, I know better than to give so many options to a large group, so I better figure out something soon. I guess when I have time I will ride my bike around and check out all of the fields.