Its easy to get peeved and fume at these people. Everyone does. The awareness of Ultimate as a sport is non-existant. You can see it in media reports.
Personally, i've had one fellow start putting the shoulder in every time I either cut or moved back into the stack. As a result, I proceeded to score on him with no mercy and do thing that I wouldn't do on a raw beginner with some enthusiasm.
However, in the end he realized that he was a) letting his team down by being a tool b) looking like an idiot and c) putting everyone from the club offside.
After he started showing a bit of respect to the sport, I actually showed him what to do and taught him about the game.
I found that these "tough guys", they aren't too bright, but they are atheletic. So things you might want to try are actually giving them a youtube video of people doing crazy stuff (shoulder high layout bids, length of the field hammers, people getting massively skyed), then actually go outside and show them how to do it.
For example, show a video of people getting skyed, then go outside and play 500. Then when you catch the disc, make sure you spike it at everyone's feet and act like it is a big thing. (it is, but new people don't know that) Its unspirited (so make sure you never do it in a game with people that like ultimate and actually play seriously), but its a great way to teach someone, they just got owned. Most soccer or football players will understand that when the disc gets spiked at their feet and everyone is cheering the guy who just caught it, they just got owned. And no sportsman likes being owned by the nerdy guy that doesn't actually play a real sport
Maybe broach the issue with your coach and ask him to run a few drills at the start. Get him to encourage everyone to do the drill properly. Make sure you and your friends are into it and doing things right. Compliment the "neanderthals" if they do something right or good.
Trick throws are also a good way of drawing people into to the more glamorous side of ultimate. At this tournament i was at, there was this guy, who wasn't really into the games and was only there because his friend dragged him along. He played a point and i faked a high release past his ear then threw to an open reciever whilst he was looking around. He said that it was "cool", so I went over and I showed him some "trick throws", things like faking a hammer then holding the disc behind your back. A few hours later, I was walking to a game and this fellow came running up and proceeded to tell me about this guy he faked out completely and all these cool things he had done through the day. I stumbled onto a way that got him completely hooked on ultimate simply by being a clown and showing him throws no serious, self respecting ultimate player would use in a game....
The most important thing is to act with diginity. Nobody is beneath the sport. No matter how much of a tool they are, everyone is entitled to play. Always. So perserve, try and come up with ways to convince these footy boys that ultimate is a real sport. Try and come up with ways to trick these guys into thinking like an ultimate player thinks.... Big fat handblocks = cool, big hits = bad, layout D's = cool, shitty throws = you're useless.
Possibly don't be that explicit though. Positive reinforcement is better than negative reinforcement.