I have run into this situation a few times... one led to a physical altercation where the police got involved... no charges pressed, but it was basically a mess... some people set up their motor homes in such a way that they blocked a boat launch to an area we have hunted for 30 years... when we arrived at 7 am, they were all sleeping, I lightly knocked on the trailer door of both vehicles and requested that they move enough so that we could slip by... the first group obliged, the second fella was full of beer, p!ss and vinegar and refused... I did my best to squeak around and Jack knife the boat down the slope, but when I swung the front of the truck, it knocked over their camp table... the guy got belligerent and ended up pushing my teenage son, so I threw him down the slope into the river... he tried to attack up the slope, but a light push sent him back for another swim, after which he settled down, until the police arrived... after hearing the stories the police officer suggested that he would press charges all around and let the court sort it out... I said we were not interested in charging anyone, we just wanted to go hunting. The other fella was eating crow by then... so the officer told them to pack up and escorted them away from the area blocking egress... we were in the bush, portaged two lakes away for 7 days... and the whole time I was convinced our vehicle was going to get vandalized... but it was fine when we returned... basically the situation was a sh!t show and I highly recommend avoiding a similar scenario.