Yep, this is how you do it. I expect nothing else from European soccer fans. Who cares if this isn't even the top league in Poland, you got a team to support, you go get some cranes and set it up around the stadium. I'm just assuming they rented them in the headline too. It's a 50/50 shot they didn't steal them or owned them already. I'm not ruling anything out when it comes to that many people supporting a second tier Polish soccer team.
If there's one thing I know for certain it's the people in the cranes directly behind the trees are the truly crazy ones. Nobody wants to go higher in a crane if they don't want to. Nobody actually with a brain would line up directly behind the tree. I swear they are the lead hooligans. They organize the meeting at the pub and start the cheers. I can guarantee that, not even an assumption.
I love this move. They were going to watch the game together anyways, might as well find a way to get some cranes together and support the team. Gotta support the team.