for clarification... if you enter a river from a public place and wade the river through to the part where it's on a private golf course, then they can't ask you to leave correct? since the course can't own the water.
i was watching the canadian open on tv this year at glen abbey and also drove by there that weekend since i'm always in oakville. i saw all the people walking and shuttling to the course and then i thought about something. what if you waded the river, which is shallow there, down to the course and watched golf for free?
you would get so many dirty looks from event staff but also get laughs from some people. might even end up on tv. and to top if all off, what if you actually casted a line right while PGA guys were play the hole right next to you?