Man I hate people who ride safely. don't exceed the speed limit while riding in groups, and choose not to end up a greasy spot on the highway...
Im not advocating not riding safely. 15 mph under the flow of traffic is not safe, but a Hazard. Gaps in your riding group you can put an 18 wheeler in is not safe. Staying 5 to 10 under the speed limit in a group is not safe, it pisses traffic off and cars try to get by you. Slowing way down for a curve is a hazard. I'm talking the people who see a 35 mph curve and slow to 20, they are afraid to lean their bikes. Around here 35mph curve is very safe at 45, good riders at 55.
The safest way to ride in a group is with the flow of traffic. The safest way is to not have cars backed up behind you because your speed is so slow.
I feel with the lack of skill most HOG chapter riders have it is safest to not ride with them. The MC I am in we ride side by side, and I feel much safer as these folks can ride their motorcycles.