Here in MN it is not legal to block traffic. In WI it is. That being said you have to check with the state you are in. As far as riding in large groups, for me it's not a problem. I must admit tho that most of the large groups I ride with are HD. A lot of us have taken the Safety motorcycle courses, along with the advanced riding and accident scene management training. I ride with three different HD clubs, all ride the staggered position. New riders usually ride in the front as that's where the speed is the slowest. If a new rider is having issues then a Road Captain will take them to the back and ride with them individually to help them out and give them some pointers. After all we all had a start day

They have a pre-ride meeting before the ride, going over the route we'll be taking, which is checked usually the day before by the road captain leading the ride along with other road captains, hand signals, debris on the road, medical concerns if someone has some(bee sting, etc), what to do if someone goes down, getting split up at intersections/stop signs etc. It's really cool to look in your mirror and see all the bike behind you, or if your more towards the back the bikes in front!