So yesterday I started stirring up the park kinda nearby with like 100 pokestops and 6 or 7 gyms. I got there and was surprised that hardly anyone was there (was during school hours was probably why) so I just roamed around for a couple hours.
After a bit, I decided to work on taking some gyms. I went to the 3 gyms right next to each other and began claiming them for Instinct before some guy named itemize on Mystic began stealing them back, so I literally followed him around the park taking back the gyms he took from me. Eventually he got bored and left and I got the triple crown with 3 gyms.
At this point though, all the walking combined with high temps had me succumbing to heat sickness, so I just decided to chill under a tree near one of my gyms for a while since my car was far away.
Then things got interesting.
A guy and a girl started attacking my gym that I was sitting by. I wasnt about to let them take it back while I sat next to it, so once they defeated it, I'd immediately place another pokemon on it to keep it under my control. This went on for a good while and people playing the game throughout the park noticed, and crowds began showing up as the gym alternated between yellow and unoccupied. After about 15 minutes, I could hear people swearing and around 30 people were milling around trying to figure out who was holding the gym. One dude saw me under my tree and in a low voice asked if I was on Instinct, to which I said yes and he told me how he could see this going on from the parking lot and as a fellow Instinct member, wanted to check it out. He then told me that people were getting extremely pissed off, wished me luck, and told me he'd return to check on it.
Valor finally managed to grab control of the gym after 25 minutes and they poured cement all over it securing it with 4 high powered pokemons. People began to walk away content with my defeat, but I set to work at whittling away at the gym using up all my potions and revives in the process. Took me a while, but I managed to tear down the gym, claim it back for my own, and leave a pokemon before leaving to set a statement.